diff --git a/ext/opcache/Optimizer/optimize_func_calls.c b/ext/opcache/Optimizer/optimize_func_calls.c
index 98bfc1e99ec..9861930524c 100644
--- a/ext/opcache/Optimizer/optimize_func_calls.c
+++ b/ext/opcache/Optimizer/optimize_func_calls.c
@@ -126,7 +126,12 @@ static void optimize_func_calls(zend_op_array *op_array, zend_persistent_script
 					call_stack[call - 1].opline = NULL;
 				}
 				break;
-
+#if ZEND_EXTENSION_API_NO >= PHP_5_6_X_API_NO
+			case ZEND_SEND_UNPACK:
+				call_stack[call - 1].func = NULL;
+				call_stack[call - 1].opline = NULL;
+				break;
+#endif
 			default:
 				break;
 		}