diff --git a/gcc/testsuite/c-c++-common/cpp/fmax-include-depth.c b/gcc/testsuite/c-c++-common/cpp/fmax-include-depth.c
index bd8cc3adcdd704f7271417e95281dd7f410da3c0..134c29805c89063c5b2777c4f0e86cf13d984e08 100644
--- a/gcc/testsuite/c-c++-common/cpp/fmax-include-depth.c
+++ b/gcc/testsuite/c-c++-common/cpp/fmax-include-depth.c
@@ -1,4 +1,4 @@
-/* { dg-do preprocess} */
+/* { dg-do preprocess } */
 /* { dg-options "-fmax-include-depth=1" } */
 
 #include "fmax-include-depth-1b.h" /* { dg-error ".include nested depth 1 exceeds maximum of 1 .use -fmax-include-depth=DEPTH to increase the maximum." } */