diff --git a/source/Commands/CommandObjectFrame.cpp b/source/Commands/CommandObjectFrame.cpp
index 547acd6..a8835e7 100644
--- a/source/Commands/CommandObjectFrame.cpp
+++ b/source/Commands/CommandObjectFrame.cpp
@@ -442,7 +442,7 @@
         ExecutionContext exe_ctx(m_interpreter.GetDebugger().GetExecutionContext());
         if (exe_ctx.frame == NULL)
         {
-            result.AppendError ("invalid frame");
+            result.AppendError ("you must be stopped in a valid stack frame to view frame variables.");
             result.SetStatus (eReturnStatusFailed);
             return false;
         }