diff --git a/Zend/zend_operators.h b/Zend/zend_operators.h
index 57bcdd8d6ae4..5478e164c178 100644
--- a/Zend/zend_operators.h
+++ b/Zend/zend_operators.h
@@ -148,6 +148,7 @@ static zend_always_inline zend_long zend_dval_to_lval_silent(double d)
 /* Used to convert a string float to integer during an (int) cast */
 static zend_always_inline zend_long zend_dval_to_lval_cap(double d, const zend_string *s)
 {
+	ZEND_IGNORE_VALUE(s);
 	if (UNEXPECTED(!zend_finite(d))) {
 		return 0;
 	} else if (!ZEND_DOUBLE_FITS_LONG(d)) {