diff --git a/ChangeLog.unit-testing-framework b/ChangeLog.unit-testing-framework
index a451108c4..5fd7a2f28 100644
--- a/ChangeLog.unit-testing-framework
+++ b/ChangeLog.unit-testing-framework
@@ -1,3 +1,7 @@
+2010-01-12  BVK Chaitanya  <bvk@dbook>
+
+	* tests/util/grub-shell-tester.in: Fix error message.
+
 2010-01-08  BVK Chaitanya  <bvk.groups@gmail.com>
 
 	Unit testing framework for GRUB.
diff --git a/tests/util/grub-shell-tester.in b/tests/util/grub-shell-tester.in
index 18f5e79b7..6ed4ebcac 100644
--- a/tests/util/grub-shell-tester.in
+++ b/tests/util/grub-shell-tester.in
@@ -98,7 +98,7 @@ bash ${source} >${outfile2}
 
 if ! diff -q ${outfile1} ${outfile2} >/dev/null
 then
-  echo "$1: GRUB and BASH outputs (${outfile1}, ${outfile2}) did not match"
+  echo "${source}: GRUB and BASH outputs did not match (see diff -u ${outfile1} ${outfile2})"
   status=1
 else
     rm -f ${outfile1} ${outfile2}