diff --git a/Userland/Libraries/LibC/ctype.cpp b/Userland/Libraries/LibC/ctype.cpp
index 69f27456a5..931bd0854e 100644
--- a/Userland/Libraries/LibC/ctype.cpp
+++ b/Userland/Libraries/LibC/ctype.cpp
@@ -116,7 +116,7 @@ int islower(int c)
 #undef isascii
 int isascii(int c)
 {
-    return ((unsigned)c <= 127);
+    return __inline_isascii(c);
 }
 
 #undef isblank