diff --git a/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs b/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs
index c1bd43cb..665be942 100644
--- a/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs
+++ b/Src/Newtonsoft.Json.Tests/JsonSerializerTest.cs
@@ -1024,6 +1024,15 @@ keyword such as type of business.""
       Assert.AreEqual(1, c.Height);
     }
 
+    [Test]
+    [ExpectedException(typeof(JsonSerializationException), ExpectedMessage = "Could not find member 'Missing' on object of type 'DoubleClass'")]
+    public void MissingMemeber()
+    {
+      string json = @"{""Missing"":1}";
+
+      JsonConvert.DeserializeObject<DoubleClass>(json);
+    }
+
     [Test]
     public void SerializeTypeProperty()
     {
diff --git a/Src/Newtonsoft.Json.Tests/JsonTextReaderTest.cs b/Src/Newtonsoft.Json.Tests/JsonTextReaderTest.cs
index aac7f58f..6735c6fe 100644
--- a/Src/Newtonsoft.Json.Tests/JsonTextReaderTest.cs
+++ b/Src/Newtonsoft.Json.Tests/JsonTextReaderTest.cs
@@ -445,5 +445,29 @@ namespace Newtonsoft.Json.Tests
         Assert.AreEqual(JsonToken.EndArray, jsonReader.TokenType);
       }
     }
+
+    [Test]
+    [ExpectedException(typeof(JsonReaderException), ExpectedMessage = @"Invalid character after parsing property name. Expected ':' but got: "". Line 3, position 9.")]
+    public void MissingColon()
+    {
+      string json = @"{
+    ""A"" : true,
+    ""B"" ""hello"", // Notice the colon is missing
+    ""C"" : ""bye""
+}";
+
+      JsonTextReader reader = new JsonTextReader(new StringReader(json));
+
+      reader.Read();
+      Assert.AreEqual(JsonToken.StartObject, reader.TokenType);
+
+      reader.Read();
+      Assert.AreEqual(JsonToken.PropertyName, reader.TokenType);
+
+      reader.Read();
+      Assert.AreEqual(JsonToken.Boolean, reader.TokenType);
+
+      reader.Read();
+    }
   }
 }
\ No newline at end of file
diff --git a/Src/Newtonsoft.Json/JsonSerializer.cs b/Src/Newtonsoft.Json/JsonSerializer.cs
index 511e8ecd..f3b02c95 100644
--- a/Src/Newtonsoft.Json/JsonSerializer.cs
+++ b/Src/Newtonsoft.Json/JsonSerializer.cs
@@ -423,7 +423,7 @@ namespace Newtonsoft.Json
       else
       {
         if (_missingMemberHandling == MissingMemberHandling.Error)
-          throw new JsonSerializationException("Could not find member '{0}' on object of type '{1}'".FormatWith(CultureInfo.InvariantCulture, memberName, targetType.GetType().Name));
+          throw new JsonSerializationException("Could not find member '{0}' on object of type '{1}'".FormatWith(CultureInfo.InvariantCulture, memberName, targetType.Name));
 
         reader.Skip();
       }
diff --git a/Src/Newtonsoft.Json/JsonTextReader.cs b/Src/Newtonsoft.Json/JsonTextReader.cs
index 6cd83fb2..8786eb45 100644
--- a/Src/Newtonsoft.Json/JsonTextReader.cs
+++ b/Src/Newtonsoft.Json/JsonTextReader.cs
@@ -275,16 +275,6 @@ namespace Newtonsoft.Json
       _currentChar = '\0';
     }
 
-    private bool MoveTo(char value)
-    {
-      while (MoveNext())
-      {
-        if (_currentChar == value)
-          return true;
-      }
-      return false;
-    }
-
     /// <summary>
     /// Reads the next Json token from the stream.
     /// </summary>
@@ -424,10 +414,15 @@ namespace Newtonsoft.Json
         throw CreateJsonReaderException("Invalid property identifier character: {0}. Line {1}, position {2}.", _currentChar, _currentLineNumber, _currentLinePosition);
       }
 
-      // finished property. move to colon
       if (_currentChar != ':')
       {
-        MoveTo(':');
+        MoveNext();
+
+        // finished property. skip any whitespace and move to colon
+        EatWhitespace(false);
+
+        if (_currentChar != ':')
+          throw CreateJsonReaderException("Invalid character after parsing property name. Expected ':' but got: {0}. Line {1}, position {2}.", _currentChar, _currentLineNumber, _currentLinePosition);
       }
 
       SetToken(JsonToken.PropertyName, _buffer.ToString());