diff --git a/module/program/lang/de.php b/module/program/lang/de.php
index 6abe5654ef..70f228ea15 100644
--- a/module/program/lang/de.php
+++ b/module/program/lang/de.php
@@ -99,10 +99,10 @@ $lang->program->noProgram          = 'No program.';
 $lang->program->showClosed         = 'Closed programs.';
 $lang->program->tips               = 'If a parent program is selected, the products under the parent program can be associated. If no program is selected for the project, a product with the same name as the project is created and associated with the project by default.';
 $lang->program->confirmBatchUnlink = "Do you want to batch unlink these stakeholders?";
-$lang->program->beginLetterParent  = 'Program "%s" set start date should be greater than or equal to parent program "%s" set start date: %s.';
-$lang->program->endGreaterParent   = 'Program "%s" set end date should be less than or equal to parent program "%s" set end date: %s.';
-$lang->program->beginGreateChild   = 'The start date of parent program "%s" set should be less than or equal to the minimum start time of child program "%s" set: %s.';
-$lang->program->endLetterChild     = 'The end time of parent program "%s" set should be greater than or equal to the maximum end time of child program "%s" set: %s.';
+$lang->program->beginLetterParent  = 'The start date of the program "%s" should be ≥ the start date of the parent program "%s": %s.';
+$lang->program->endGreaterParent   = 'The finish date of the program "%s" should be ≤ the finish date of the parent program "%s": %s.';
+$lang->program->beginGreateChild   = 'The start date of the parent program "%s" should be ≤the minimum start time of the subprogram "%s": %s.';
+$lang->program->endLetterChild     = 'The finish time of the parent program "%s" should be ≥ the maximum finish time of the subprogram "%s": %s.';
 $lang->program->closeErrorMessage  = 'There are subprograms or projects that are not closed';
 $lang->program->hasChildren        = 'It has child programs or projects. You cannot delete it.';
 $lang->program->hasProduct         = 'It has products. You cannot delete it.';
diff --git a/module/program/lang/en.php b/module/program/lang/en.php
index 98a84c6887..e0706ce9c4 100644
--- a/module/program/lang/en.php
+++ b/module/program/lang/en.php
@@ -99,10 +99,10 @@ $lang->program->noProgram          = 'No program.';
 $lang->program->showClosed         = 'Closed';
 $lang->program->tips               = 'If a parent program is selected, the products under the parent program can be associated. If no program is selected for the project, a product with the same name as the project is created and associated with the project by default.';
 $lang->program->confirmBatchUnlink = "Do you want to batch unlink these stakeholders?";
-$lang->program->beginLetterParent  = 'Program "%s" set start date should be greater than or equal to parent program "%s" set start date: %s.';
-$lang->program->endGreaterParent   = 'Program "%s" set end date should be less than or equal to parent program "%s" set end date: %s.';
-$lang->program->beginGreateChild   = 'The start date of parent program "%s" set should be less than or equal to the minimum start time of child program "%s" set: %s.';
-$lang->program->endLetterChild     = 'The end time of parent program "%s" set should be greater than or equal to the maximum end time of child program "%s" set: %s.';
+$lang->program->beginLetterParent  = 'The start date of the program "%s" should be ≥ the start date of the parent program "%s": %s.';
+$lang->program->endGreaterParent   = 'The finish date of the program "%s" should be ≤ the finish date of the parent program "%s": %s.';
+$lang->program->beginGreateChild   = 'The start date of the parent program "%s" should be ≤the minimum start time of the subprogram "%s": %s.';
+$lang->program->endLetterChild     = 'The finish time of the parent program "%s" should be ≥ the maximum finish time of the subprogram "%s": %s.';
 $lang->program->closeErrorMessage  = 'There are subprograms or projects that are not closed';
 $lang->program->hasChildren        = 'The program has a child program or the project exists and can not be deleted.';
 $lang->program->hasProduct         = 'The program has products exist and can not be deleted.';
diff --git a/module/program/lang/fr.php b/module/program/lang/fr.php
index 280aa6e2d9..be7ee44059 100644
--- a/module/program/lang/fr.php
+++ b/module/program/lang/fr.php
@@ -99,10 +99,10 @@ $lang->program->noProgram          = 'No program.';
 $lang->program->showClosed         = 'Closed programs.';
 $lang->program->tips               = 'If a parent program is selected, the products under the parent program can be associated. If no program is selected for the project, a product with the same name as the project is created and associated with the project by default.';
 $lang->program->confirmBatchUnlink = "Do you want to batch unlink these stakeholders?";
-$lang->program->beginLetterParent  = 'La date de début du programme "%s" doit être supérieure ou égale à la date de début du programme parent "%s": %s.';
-$lang->program->endGreaterParent   = 'La date de fin du programme "%s" doit être inférieure ou égale à la date de fin du programme parent "%s": %s';
-$lang->program->beginGreateChild   = 'La date de début de l\'ensemble parent "%s" doit être inférieure ou égale à l\'heure de début minimale de l\'ensemble enfant "%s": %s.';
-$lang->program->endLetterChild     = 'L\'heure de fin de l\'ensemble parent "%s" doit être supérieure ou égale à l\'heure de fin maximale de l\'ensemble enfant "%s": %s.';
+$lang->program->beginLetterParent  = 'La date de début du programme "%s" doit être ≥ à la date de début du programme parent "%s" : %s.';
+$lang->program->endGreaterParent   = 'La date de fin du programme "%s" doit être ≤ à la date de fin du programme parent "%s" : %s.';
+$lang->program->beginGreateChild   = 'La date de début du programme parent "%s" doit être ≤ à la date de début minimum du sous-programme "%s" : %s.';
+$lang->program->endLetterChild     = 'Le temps de fin du programme parent "%s" doit être ≥ au temps de fin maximum du sous-programme "%s" : %s.';
 $lang->program->closeErrorMessage  = 'There are subprograms or projects that are not closed';
 $lang->program->hasChildren        = 'It has child programs or projects. You cannot delete it.';
 $lang->program->hasProduct         = 'It has products. You cannot delete it.';