diff --git a/Source/EntityFramework.Extended/Batch/MySqlBatchRunner.cs b/Source/EntityFramework.Extended/Batch/MySqlBatchRunner.cs
index 7b76fd9..a68d846 100644
--- a/Source/EntityFramework.Extended/Batch/MySqlBatchRunner.cs
+++ b/Source/EntityFramework.Extended/Batch/MySqlBatchRunner.cs
@@ -310,11 +310,11 @@ private int InternalUpdate<TEntity>(ObjectContext objectContext, EntityMap entit
                             parameter.Value = value;
                             updateCommand.Parameters.Add(parameter);
 
-                            sqlBuilder.AppendFormat("{0} = @{1}", columnName, parameterName);
+                            sqlBuilder.AppendFormat("j0.{0} = @{1}", columnName, parameterName);
                         }
                         else
                         {
-                            sqlBuilder.AppendFormat("{0} = NULL", columnName);
+                            sqlBuilder.AppendFormat("j0.{0} = NULL", columnName);
                         }
                     }
                     else
diff --git a/Source/EntityFramework.Extended/EntityFramework.Extended.net45.csproj b/Source/EntityFramework.Extended/EntityFramework.Extended.net45.csproj
index ddf8af6..89e9fa6 100644
--- a/Source/EntityFramework.Extended/EntityFramework.Extended.net45.csproj
+++ b/Source/EntityFramework.Extended/EntityFramework.Extended.net45.csproj
@@ -30,7 +30,7 @@
     <DebugType>pdbonly</DebugType>
     <Optimize>true</Optimize>
     <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
+    <DefineConstants>NET45</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <Prefer32Bit>false</Prefer32Bit>