diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 021d01b7ff0..120f0874b27 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,8 @@
+2019-01-07  Tom de Vries  <tdevries@suse.de>
+
+	* testsuite/libgomp.oacc-c-c++-common/vector-length-128-3.c: Fix
+	GOMP_OPENACC_DIM argument.
+
 2019-01-03  Tom de Vries  <tdevries@suse.de>
 
 	* testsuite/libgomp.oacc-c-c++-common/vector-length-128-1.c: New test.
diff --git a/libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-128-3.c b/libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-128-3.c
index c403e74658b..59be37a7c27 100644
--- a/libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-128-3.c
+++ b/libgomp/testsuite/libgomp.oacc-c-c++-common/vector-length-128-3.c
@@ -2,7 +2,7 @@
 /* { dg-additional-options "-foffload=-fdump-tree-oaccdevlow" } */
 /* We default to warp size 32 for the vector length, so the GOMP_OPENACC_DIM has
    no effect.  */
-/* { dg-set-target-env-var "GOMP_OPENACC_DIM" "-:-:128" } */
+/* { dg-set-target-env-var "GOMP_OPENACC_DIM" "::128" } */
 /* { dg-set-target-env-var "GOMP_DEBUG" "1" } */