diff --git a/ChangeLog b/ChangeLog
index 8e22be9..fd5a284 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-01-24  Wolfgang Lux  <wolfgang.lux@gmail.com>
+
+	* Modules/Editors/ProjectCenter/PCEditor.m (-revertFileToSaved):
+	Ask for confirmation before reverting.
+
 2011-01-24  Wolfgang Lux  <wolfgang.lux@gmail.com>
 
 	* Modules/Editors/ProjectCenter/PCEditorView.m (-performIndentation):
diff --git a/Modules/Editors/ProjectCenter/PCEditor.m b/Modules/Editors/ProjectCenter/PCEditor.m
index 895dd2a..9a46734 100644
--- a/Modules/Editors/ProjectCenter/PCEditor.m
+++ b/Modules/Editors/ProjectCenter/PCEditor.m
@@ -666,6 +666,16 @@
       return YES;
     }
 
+  if (NSAlertDefaultReturn !=
+      NSRunAlertPanel(@"Revert",
+		      @"%@ has been modified.  "
+		      @"Are you sure you want to undo changes?",
+		      @"Revert", @"Cancel", nil,
+		      [_path lastPathComponent]))
+      {
+	return NO;
+      }
+
   [[NSNotificationCenter defaultCenter]
     postNotificationName:PCEditorWillRevertNotification
 		  object:self];