diff --git a/wincmd b/wincmd
index 1f4e3fa..9f1a1ae 100755
Binary files a/wincmd and b/wincmd differ
diff --git a/wincmd.h b/wincmd.h
index da9d0a4..529ea65 100644
--- a/wincmd.h
+++ b/wincmd.h
@@ -72,7 +72,7 @@ int _lib_wincmd_main(int argc, char** argv) {
         if (str[0] == '-') {
             unsigned char loc = 0;
             if (str[1] == '-') loc ++;
-            switch (str[1] + loc) {
+            switch (str[1 + loc]) {
                 default:
                 if (get_command == true) break;
                 wincmd_error("Cannot find option!");