diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties
index c8a74fe1df7..df3839bc763 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/internal/ui/LaunchMessages.properties
@@ -95,6 +95,7 @@ CMainTab.Choose_program_to_run=Choose a &program to run:
 CMainTab.Choose_program_to_run_from_NAME=Choose a program to run from {0}:
 CMainTab.UseTerminal=Connect process input & output to a terminal.
 CMainTab.Program_is_not_a_recongnized_executable=Program is not a recognized executable.
+CMainTab.Program_invalid_proj_path=Program specification is not a valid project-relative path.
 #For CMainTab.Configuration_name: {0} - project name; {1} - configuration name
 CMainTab.Configuration_name={0} {1}