diff --git a/configure.ac b/configure.ac
index e4ee7af1..214c9a01 100644
--- a/configure.ac
+++ b/configure.ac
@@ -195,10 +195,9 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 (void) SIZE_MAX;
 (void) UINT64_MAX;
 ]])],
-  [AC_MSG_RESULT(no)
-   CPPFLAGS="$CPPFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS"
-  ],
+  [AC_MSG_RESULT(no)],
   [AC_MSG_RESULT(yes)
+   CPPFLAGS="$CPPFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS"
 ])
 
 AC_MSG_CHECKING(whether we can assemble basic amd64 code)