diff --git a/gc.c b/gc.c
index eacd8dae86..e920348a12 100644
--- a/gc.c
+++ b/gc.c
@@ -4166,7 +4166,7 @@ rb_gc_vm_weak_table_foreach(vm_table_foreach_callback_func callback,
         break;
       }
       case RB_GC_VM_WEAK_TABLE_COUNT:
-        rb_bug("Unreacheable");
+        rb_bug("Unreachable");
       default:
         rb_bug("rb_gc_vm_weak_table_foreach: unknown table %d", table);
     }
diff --git a/object.c b/object.c
index 03474389fd..ae1a8aa406 100644
--- a/object.c
+++ b/object.c
@@ -378,7 +378,7 @@ init_copy(VALUE dest, VALUE obj)
     RBASIC(dest)->flags |= RBASIC(obj)->flags & T_MASK;
     switch (BUILTIN_TYPE(obj)) {
         case T_IMEMO:
-          rb_bug("Unreacheable");
+          rb_bug("Unreachable");
           break;
         case T_CLASS:
         case T_MODULE: