diff --git a/src/xdelta3.c b/src/xdelta3.c
index 2eb8cb4..9c3c4b8 100644
--- a/src/xdelta3.c
+++ b/src/xdelta3.c
@@ -100,7 +100,7 @@ process:
       goto process;
     }
     default: {
-      fprintf(stderr, "ERROR: !!! INVALID %s %d !!!\n", stream.msg, returnValue);
+      fprintf(stderr, "Error in xdelta3: %s (%s)\n", stream.msg, xd3_strerror(returnValue));
       errorAndExit();
     }
   }