diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/util/Messages.properties b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/util/Messages.properties
index 6805d5fb139..4fc6559d569 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/util/Messages.properties
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/util/Messages.properties
@@ -11,3 +11,5 @@
 
 EditorUtility_calculatingChangedRegions_message=Calculating changed regions
 EditorUtility_error_calculatingChangedRegions=An error occurred while calculating the changed regions. See error log for details.
+OpenExternalProblemAction_CannotReadExternalLocation=Cannot read external location {0}
+OpenExternalProblemAction_ErrorOpeningFile=Error Opening File