diff --git a/module/execution/lang/de.php b/module/execution/lang/de.php
index 8314316ad5..d7a53c673a 100644
--- a/module/execution/lang/de.php
+++ b/module/execution/lang/de.php
@@ -398,15 +398,15 @@ $lang->execution->errorSameProducts            = "{$lang->executionCommon} Kann
 $lang->execution->errorSameBranches            = "{$lang->executionCommon} cannot be linked to the same branch twice";
 $lang->execution->errorBegin                   = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
 $lang->execution->errorEnd                     = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the {$lang->projectCommon}.";
-$lang->execution->errorLetterProject           = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
+$lang->execution->errorLesserProject           = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
 $lang->execution->errorGreaterProject          = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the {$lang->projectCommon}.";
 $lang->execution->errorCommonBegin             = "The start date of ' . $lang->executionCommon . ' should be ≥ the start date of {$lang->projectCommon} : %s.";
 $lang->execution->errorCommonEnd               = "The deadline of ' . $lang->executionCommon .  ' should be ≤ the deadline of {$lang->projectCommon} : %s.";
-$lang->execution->errorLetterParent            = 'The begin cannot be less than the begin of the parent stage to which it belongs: %s.';
+$lang->execution->errorLesserParent            = 'The begin cannot be less than the begin of the parent stage to which it belongs: %s.';
 $lang->execution->errorGreaterParent           = 'The end cannot be greater than the end of the parent stage to which it belongs：%s.';
 $lang->execution->errorNameRepeat              = "Child %s of the same parent stage cannot have the same name.";
 $lang->execution->errorAttrMatch               = "Parent stage's attribute is [%s], the attribute needs to be consistent with the parent stage.";
-$lang->execution->errorLetterPlan              = "『%s』cannot be less than the plan start time『%s』。";
+$lang->execution->errorLesserPlan              = "『%s』cannot be less than the plan start time『%s』。";
 $lang->execution->accessDenied                 = "Zugriff zu {$lang->executionCommon} verweigert!";
 $lang->execution->tips                         = 'Hinweis';
 $lang->execution->afterInfo                    = "{$lang->executionCommon} wurde erstellt. Als nächstes können Sie ";
diff --git a/module/execution/lang/en.php b/module/execution/lang/en.php
index 2b11defbd9..991d09b0b7 100644
--- a/module/execution/lang/en.php
+++ b/module/execution/lang/en.php
@@ -398,15 +398,15 @@ $lang->execution->errorSameProducts            = "{$lang->executionCommon} canno
 $lang->execution->errorSameBranches            = "{$lang->executionCommon} cannot be linked to the same branch twice";
 $lang->execution->errorBegin                   = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
 $lang->execution->errorEnd                     = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the {$lang->projectCommon}.";
-$lang->execution->errorLetterProject           = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
+$lang->execution->errorLesserProject           = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
 $lang->execution->errorGreaterProject          = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the {$lang->projectCommon}.";
 $lang->execution->errorCommonBegin             = "The start date of ' . $lang->executionCommon . ' should be ≥ the start date of {$lang->projectCommon} : %s.";
 $lang->execution->errorCommonEnd               = "The deadline of ' . $lang->executionCommon .  ' should be ≤ the deadline of {$lang->projectCommon} : %s.";
-$lang->execution->errorLetterParent            = 'The begin cannot be less than the begin of the parent stage to which it belongs: %s.';
+$lang->execution->errorLesserParent            = 'The begin cannot be less than the begin of the parent stage to which it belongs: %s.';
 $lang->execution->errorGreaterParent           = 'The end cannot be greater than the end of the parent stage to which it belongs：%s.';
 $lang->execution->errorNameRepeat              = "Child %s of the same parent stage cannot have the same name.";
 $lang->execution->errorAttrMatch               = "Parent stage's attribute is [%s], the attribute needs to be consistent with the parent stage.";
-$lang->execution->errorLetterPlan              = "『%s』cannot be less than the plan start time『%s』。";
+$lang->execution->errorLesserPlan              = "『%s』cannot be less than the plan start time『%s』。";
 $lang->execution->accessDenied                 = "Your access to {$lang->executionCommon} is denied!";
 $lang->execution->tips                         = 'Note';
 $lang->execution->afterInfo                    = "{$lang->executionCommon} is created. Next you can ";
diff --git a/module/execution/lang/fr.php b/module/execution/lang/fr.php
index baad1b6a23..037fb3ad30 100644
--- a/module/execution/lang/fr.php
+++ b/module/execution/lang/fr.php
@@ -398,15 +398,15 @@ $lang->execution->errorSameProducts            = "Ce {$lang->executionCommon} ne
 $lang->execution->errorSameBranches            = "{$lang->executionCommon} cannot be linked to the same branch twice";
 $lang->execution->errorBegin                   = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
 $lang->execution->errorEnd                     = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the {$lang->projectCommon}.";
-$lang->execution->errorLetterProject           = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
+$lang->execution->errorLesserProject           = "The start time of {$lang->executionCommon} cannot be less than the start time of the {$lang->projectCommon} %s.";
 $lang->execution->errorGreaterProject          = "The end time of {$lang->executionCommon} cannot be greater than the end time %s of the {$lang->projectCommon}.";
 $lang->execution->errorCommonBegin             = "The start date of ' . $lang->executionCommon . ' should be ≥ the start date of {$lang->projectCommon} : %s.";
 $lang->execution->errorCommonEnd               = "The deadline of ' . $lang->executionCommon .  ' should be ≤ the deadline of {$lang->projectCommon} : %s.";
-$lang->execution->errorLetterParent            = 'The begin cannot be less than the begin of the parent stage to which it belongs: %s.';
+$lang->execution->errorLesserParent            = 'The begin cannot be less than the begin of the parent stage to which it belongs: %s.';
 $lang->execution->errorGreaterParent           = 'The end cannot be greater than the end of the parent stage to which it belongs：%s.';
 $lang->execution->errorNameRepeat              = "Child %s of the same parent stage cannot have the same name.";
 $lang->execution->errorAttrMatch               = "Parent stage's attribute is [%s], the attribute needs to be consistent with the parent stage.";
-$lang->execution->errorLetterPlan              = "『%s』cannot be less than the plan start time『%s』。";
+$lang->execution->errorLesserPlan              = "『%s』cannot be less than the plan start time『%s』。";
 $lang->execution->accessDenied                 = "Votre accès au {$lang->executionCommon} est refusé ! Désolé.";
 $lang->execution->tips                         = 'Note';
 $lang->execution->afterInfo                    = "Le {$lang->executionCommon} a été créé avec succès ! Ensuite vous pouvez ";
diff --git a/module/execution/lang/zh-cn.php b/module/execution/lang/zh-cn.php
index 128899a310..180867da06 100644
--- a/module/execution/lang/zh-cn.php
+++ b/module/execution/lang/zh-cn.php
@@ -398,15 +398,15 @@ $lang->execution->errorSameProducts            = "{$lang->executionCommon}不能
 $lang->execution->errorSameBranches            = "{$lang->executionCommon}不能关联多个相同的分支。";
 $lang->execution->errorBegin                   = "{$lang->executionCommon}的开始时间不能小于所属{$lang->projectCommon}的开始时间%s。";
 $lang->execution->errorEnd                     = "{$lang->executionCommon}的截止时间不能大于所属{$lang->projectCommon}的结束时间%s。";
-$lang->execution->errorLetterProject           = "{$lang->executionCommon}的计划开始时间不能小于所属{$lang->projectCommon}的计划开始时间%s。";
+$lang->execution->errorLesserProject           = "{$lang->executionCommon}的计划开始时间不能小于所属{$lang->projectCommon}的计划开始时间%s。";
 $lang->execution->errorGreaterProject          = "{$lang->executionCommon}的计划完成时间不能大于所属{$lang->projectCommon}的计划完成时间%s。";
 $lang->execution->errorCommonBegin             = $lang->executionCommon . "开始日期应大于等于{$lang->projectCommon}的开始日期：%s。";
 $lang->execution->errorCommonEnd               = $lang->executionCommon . "截止日期应小于等于{$lang->projectCommon}的截止日期：%s。";
-$lang->execution->errorLetterParent            = '计划开始时间不能小于所属父阶段的计划开始时间：%s。';
+$lang->execution->errorLesserParent            = '计划开始时间不能小于所属父阶段的计划开始时间：%s。';
 $lang->execution->errorGreaterParent           = '计划完成时间不能大于所属父阶段的计划完成时间：%s。';
 $lang->execution->errorNameRepeat              = "相同父阶段的子%s名称不能相同";
 $lang->execution->errorAttrMatch               = "父阶段类型为[%s]，阶段类型需与父阶段一致";
-$lang->execution->errorLetterPlan              = "『%s』应当不小于计划开始时间『%s』。";
+$lang->execution->errorLesserPlan              = "『%s』应当不小于计划开始时间『%s』。";
 $lang->execution->accessDenied                 = "您无权访问该{$lang->executionCommon}！";
 $lang->execution->tips                         = '提示';
 $lang->execution->afterInfo                    = "{$lang->executionCommon}添加成功，您现在可以进行以下操作：";