diff --git a/src/bin/make/config.h b/src/bin/make/config.h
index 3fceb0248e..4f59a5a19b 100644
--- a/src/bin/make/config.h
+++ b/src/bin/make/config.h
@@ -144,7 +144,9 @@
 
 /* Define if <signal.h> defines the SA_RESTART constant. */
 /* #undef HAVE_SA_RESTART */
+#if HOST_PLATFORM != r5
 #define HAVE_SA_RESTART 1
+#endif
 
 /* Define to 1 if you have the `setegid' function. */
 /* #undef HAVE_SETEGID */