diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4
index 3fe4e73a4f6..73d67e18784 100644
--- a/libgfortran/acinclude.m4
+++ b/libgfortran/acinclude.m4
@@ -141,11 +141,8 @@ AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_ALIAS], [
   AC_CACHE_CHECK([whether the target supports symbol aliases],
 		 have_attribute_alias, [
   AC_TRY_LINK([
-#define ULP	STR1(__USER_LABEL_PREFIX__)
-#define STR1(x)	STR2(x)
-#define STR2(x)	#x
 void foo(void) { }
-extern void bar(void) __attribute__((alias(ULP "foo")));],
+extern void bar(void) __attribute__((alias("foo")));],
     [bar();], have_attribute_alias=yes, have_attribute_alias=no)])
   if test $have_attribute_alias = yes; then
     AC_DEFINE(HAVE_ATTRIBUTE_ALIAS, 1,
diff --git a/libgfortran/configure b/libgfortran/configure
index 75872aa861d..6544f66bed1 100755
--- a/libgfortran/configure
+++ b/libgfortran/configure
@@ -23161,11 +23161,8 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
-#define ULP	STR1(__USER_LABEL_PREFIX__)
-#define STR1(x)	STR2(x)
-#define STR2(x)	#x
 void foo(void) { }
-extern void bar(void) __attribute__((alias(ULP "foo")));
+extern void bar(void) __attribute__((alias("foo")));
 int
 main ()
 {