diff --git a/py/repl.c b/py/repl.c
index ecf6e2d..4241ef0 100644
--- a/py/repl.c
+++ b/py/repl.c
@@ -8,7 +8,7 @@
             return false;
         }
     }
-    return head[i] == '\0' && (str[i] == '\0' || !g_unichar_isalpha(str[i]));
+    return head[i] == '\0' && (str[i] == '\0' || !unichar_isalpha(str[i]));
 }
 
 bool mp_repl_is_compound_stmt(const char *line) {