diff --git a/configure1.in b/configure1.in
index 080141c1c38..0b32ec9fbda 100755
--- a/configure1.in
+++ b/configure1.in
@@ -1427,7 +1427,8 @@ fi
 if test "${USE_X_TOOLKIT}" != "none"; then
   AC_COMPILE_CHECK(X11 toolkit version,
 		   [#include <X11/Intrinsic.h>],
-		   [#if XtSpecificationRelease < 6
+		   [
+#if XtSpecificationRelease < 6
 fail;
 #endif],
 		   AC_DEFINE(HAVE_X11XTR6))