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 441d9564ec8..e223347e842 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
@@ -19,7 +19,7 @@ AbstractCLaunchDelegate.Program_file_does_not_exist=Program file does not exist
 AbstractCLaunchDelegate.PROGRAM_PATH_not_found={0} not found
 AbstractCLaunchDelegate.Working_directory_does_not_exist=Working directory does not exist
 AbstractCLaunchDelegate.WORKINGDIRECTORY_PATH_not_found=The working directory {0} does not exist.
-AbstractCLaunchDelegate.Project_NAME_does_not_exist=Project {0} does not exist
+AbstractCLaunchDelegate.Project_NAME_does_not_exist=Project {0} does not exist. Please check that your launch configuration specifies a valid project in your workspace.
 AbstractCLaunchDelegate.Project_NAME_is_closed=Project {0} is closed
 AbstractCLaunchDelegate.Debugger_Process=Debugger Process
 AbstractCLaunchDelegate.building_projects=Building prerequisite project list