diff --git a/src/maomao.c b/src/maomao.c
index 61fcc5c..a2c03de 100644
--- a/src/maomao.c
+++ b/src/maomao.c
@@ -3716,7 +3716,7 @@ keybinding(uint32_t mods, xkb_keysym_t sym) {
     if (config.key_bindings_count < 1)
       break;
     k = &config.key_bindings[ji];
-    if (CLEANMASK(mods) == CLEANMASK(k->mod) && xkb_keysym_to_upper(sym) == k->keysym && k->func) {
+    if (CLEANMASK(mods) == CLEANMASK(k->mod) && xkb_keysym_to_lower(sym) == k->keysym && k->func) {
       k->func(&k->arg);
       handled = 1;
     }
diff --git a/src/parse_config.h b/src/parse_config.h
index 6dcd3f7..269a6dd 100644
--- a/src/parse_config.h
+++ b/src/parse_config.h
@@ -299,7 +299,7 @@ uint32_t parse_mod(const char *mod_str) {
 }
 
 xkb_keysym_t parse_keysym(const char *keysym_str) {
-  return  xkb_keysym_to_upper(xkb_keysym_from_name(keysym_str, XKB_KEYSYM_NO_FLAGS));
+  return  xkb_keysym_to_lower(xkb_keysym_from_name(keysym_str, XKB_KEYSYM_NO_FLAGS));
 }
 
 int parse_button(const char *str) {