1 files changed, 2 insertions, 2 deletions
diff --git a/vm.c b/vm.c
index 4f4c646b94..77e08ab45c 100644
--- a/vm.c
+++ b/vm.c
@@ -2583,7 +2583,7 @@ m_core_hash_merge_ptr(int argc, VALUE *argv, VALUE recv)
 static int
 kwmerge_i(VALUE key, VALUE value, VALUE hash)
 {
-    if (!SYMBOL_P(key)) Check_Type(key, T_SYMBOL);
+    Check_Type(key, T_SYMBOL);
     rb_hash_aset(hash, key, value);
     return ST_CONTINUE;
 }
@@ -2591,7 +2591,7 @@ kwmerge_i(VALUE key, VALUE value, VALUE hash)
 static int
 kwcheck_i(VALUE key, VALUE value, VALUE hash)
 {
-    if (!SYMBOL_P(key)) Check_Type(key, T_SYMBOL);
+    Check_Type(key, T_SYMBOL);
     return ST_CONTINUE;
 }