diff --git a/gcc/testsuite/gcc.dg/torture/pr47917.c b/gcc/testsuite/gcc.dg/torture/pr47917.c
index 5724907ba1c..32c99c6a2d2 100644
--- a/gcc/testsuite/gcc.dg/torture/pr47917.c
+++ b/gcc/testsuite/gcc.dg/torture/pr47917.c
@@ -2,7 +2,7 @@
 /* { dg-options "-std=c99" } */
 /* { dg-options "-std=gnu99" { target *-*-hpux* } } */
 /* { dg-additional-options "-D__USE_MINGW_ANSI_STDIO=1" { target *-*-mingw* } } */
-/* { dg-xfail-run-if "non-conforming C99 snprintf" { *-*-hpux11.[012]* } } */
+/* { dg-xfail-run-if "non-conforming C99 snprintf" { *-*-hpux11.[012]* } { "-O0" } } */
 
 /* PR middle-end/47917 */