diff --git a/gcc/config/i386/xm-aix.h b/gcc/config/i386/xm-aix.h
index 9e8f669b9a8..3722f67422e 100644
--- a/gcc/config/i386/xm-aix.h
+++ b/gcc/config/i386/xm-aix.h
@@ -32,3 +32,5 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #ifndef __GNUC__
 #define USE_C_ALLOCA
 #endif
+
+#define HAVE_PUTENV