1 files changed, 6 insertions, 2 deletions
diff --git a/lib/libc/ctype/islower.c b/lib/libc/ctype/islower.c
index a6108e39..8438c8d1 100644
--- a/lib/libc/ctype/islower.c
+++ b/lib/libc/ctype/islower.c
@@ -1,8 +1,12 @@
-#include <libc.h> // for weak_reference
+#include <ctype.h>     // for islower, islower_l, locale_t
+#include <sys/cdefs.h> // for __unused, __weak
 
 int islower(int c)
 {
 	return (unsigned)c - 'a' < 26;
 }
 
-weak_reference(islower, islower_l);
+__weak int islower_l(int c, locale_t __unused locale)
+{
+	return islower(c);
+}