diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 41db1ca62a0..0743b9593aa 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2018-08-01  Uros Bizjak  <ubizjak@gmail.com>
+
+	* gcc.dg/plugin/poly-int-07_plugin.c (dg-options): Use -O0.
+
 2018-08-01  Uros Bizjak  <ubizjak@gmail.com>
 
 	* gcc.dg/tree-ssa/pr84512.c: Xfail on alpha*-*-*.
diff --git a/gcc/testsuite/gcc.dg/plugin/poly-int-07_plugin.c b/gcc/testsuite/gcc.dg/plugin/poly-int-07_plugin.c
index e3203d9f3e1..53819d9a3be 100644
--- a/gcc/testsuite/gcc.dg/plugin/poly-int-07_plugin.c
+++ b/gcc/testsuite/gcc.dg/plugin/poly-int-07_plugin.c
@@ -1,5 +1,5 @@
 /* Not worth spending time optimizing this.  */
-/* { dg-options "-O" } */
+/* { dg-options "-O0" } */
 
 #include "config.h"
 #include "gcc-plugin.h"