diff --git a/Zend/Optimizer/block_pass.c b/Zend/Optimizer/block_pass.c
index 79207edb3d8b..72ae01206609 100644
--- a/Zend/Optimizer/block_pass.c
+++ b/Zend/Optimizer/block_pass.c
@@ -671,13 +671,13 @@ static void zend_optimize_block(zend_basic_block *block, zend_op_array *op_array
 			case ZEND_JMPNZ_EX:
 				while (1) {
 					if (opline->op1_type == IS_CONST) {
-						if (zend_is_true(&ZEND_OP1_LITERAL(opline)) ==
-						    (opline->opcode == ZEND_JMPZ_EX)) {
+						bool is_jmpz_ex = opline->opcode == ZEND_JMPZ_EX;
+						if (zend_is_true(&ZEND_OP1_LITERAL(opline)) == is_jmpz_ex) {
 
 							++(*opt_count);
 							opline->opcode = ZEND_QM_ASSIGN;
 							zval_ptr_dtor_nogc(&ZEND_OP1_LITERAL(opline));
-							ZVAL_BOOL(&ZEND_OP1_LITERAL(opline), opline->opcode == ZEND_JMPZ_EX);
+							ZVAL_BOOL(&ZEND_OP1_LITERAL(opline), is_jmpz_ex);
 							opline->op2.num = 0;
 							block->successors_count = 1;
 							block->successors[0] = block->successors[1];