diff --git a/gcc/c-pragma.c b/gcc/c-pragma.c
index 87e060ebfdc..a37aa98755f 100644
--- a/gcc/c-pragma.c
+++ b/gcc/c-pragma.c
@@ -25,6 +25,7 @@ Boston, MA 02111-1307, USA.  */
 #include "function.h"
 #include "defaults.h"
 #include "c-pragma.h"
+#include "flags.h"
 
 #ifdef HANDLE_SYSV_PRAGMA