diff --git a/lang/bytecode.c b/lang/bytecode.c
index 3af1285..74491c5 100644
--- a/lang/bytecode.c
+++ b/lang/bytecode.c
@@ -8,10 +8,17 @@
 enum opcodes {
 	OP_RET = 0x00,
 	OP_NUM = 0x01,
+	OP_DROP = 0x02,
 };
 
 // clang-format off
 static const unsigned char bytecode[] = {
+	OP_NUM, 0xaa, 0xaa, 0xaa, 0xaa,
+	OP_DROP,
+	OP_NUM, 0xbb, 0xbb, 0xbb, 0xbb,
+	OP_DROP,
+	OP_NUM, 0xcc, 0xcc, 0xcc, 0xcc,
+	OP_DROP,
 	OP_NUM, 0xd2, 0x04, 0x00, 0x00,
 	OP_RET
 };
@@ -33,6 +40,10 @@
 			*pos_stack++ = number_create(num);
 			break;
 		}
+		case OP_DROP: {
+			object_drop(--pos_stack);
+			break;
+		}
 		}
 	}
 }
diff --git a/lang/main.c b/lang/main.c
index 7aab790..cfff5bc 100644
--- a/lang/main.c
+++ b/lang/main.c
@@ -25,7 +25,8 @@
 
 static void test_func(void) {
 	struct object *funcA = func_create();
-	struct object *args[] = {NULL};
+	// args must have space for a stack
+	struct object *args[8] = {NULL, NULL};
 	dispatch_call(funcA, "Call", 0, &args[0]);
 	printf("funcA is %p\n", (void *)funcA);
 	object_drop(&funcA);