diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 8f417e95d8cb..36e6faaef37c 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2014-09-17  Jakub Jelinek  <jakub@redhat.com>
+
+	* ada/acats/run_all.sh: Redirect mkdir stderr to /dev/null.
+
 2014-09-17  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/63241
diff --git a/gcc/testsuite/ada/acats/run_all.sh b/gcc/testsuite/ada/acats/run_all.sh
index a084d6b3354c..658845a4101d 100755
--- a/gcc/testsuite/ada/acats/run_all.sh
+++ b/gcc/testsuite/ada/acats/run_all.sh
@@ -268,7 +268,7 @@ for chapter in $chapters; do
 	       if [ $par_countm -eq 1 ]; then
 		  as_fn_arith $par_count + 1
 		  par_count=$as_val
-		  if mkdir $GCC_RUNTEST_PARALLELIZE_DIR/$par_count; then
+		  if mkdir $GCC_RUNTEST_PARALLELIZE_DIR/$par_count 2>/dev/null; then
 		     par_last=1
 		  else
 		     par_last=