diff --git a/NEWS b/NEWS
index 43216c000120f..9e02bc1c864cf 100644
--- a/NEWS
+++ b/NEWS
@@ -11,6 +11,8 @@ PHP                                                                        NEWS
     function triggered by bailout in php_output_lock_error()). (timwolla)
   . Fix OSS-Fuzz #471533782 (Infinite loop in GC destructor fiber). (ilutov)
   . Fix OSS-Fuzz #472563272 (Borked block_pass JMP[N]Z optimization). (ilutov)
+  . Fix deprecation now showing when accessing null key of an array with JIT.
+    (alexandre-daubois)
 
 - MbString:
   . Fixed bug GH-20833 (mb_str_pad() divide by zero if padding string is
diff --git a/Zend/Optimizer/sccp.c b/Zend/Optimizer/sccp.c
index 7e2fc2db1b256..8287df040c890 100644
--- a/Zend/Optimizer/sccp.c
+++ b/Zend/Optimizer/sccp.c
@@ -363,8 +363,7 @@ static inline zend_result zval_to_string_offset(zend_long *result, zval *op) {
 static inline zend_result fetch_array_elem(zval **result, zval *op1, zval *op2) {
 	switch (Z_TYPE_P(op2)) {
 		case IS_NULL:
-			*result = zend_hash_find(Z_ARR_P(op1), ZSTR_EMPTY_ALLOC());
-			return SUCCESS;
+			return FAILURE;
 		case IS_FALSE:
 			*result = zend_hash_index_find(Z_ARR_P(op1), 0);
 			return SUCCESS;
@@ -428,6 +427,9 @@ static inline zend_result ct_eval_isset_isempty(zval *result, uint32_t extended_
 }
 
 static inline zend_result ct_eval_isset_dim(zval *result, uint32_t extended_value, zval *op1, zval *op2) {
+	if (Z_TYPE_P(op2) == IS_NULL) {
+		return FAILURE;
+	}
 	if (Z_TYPE_P(op1) == IS_ARRAY || IS_PARTIAL_ARRAY(op1)) {
 		zval *value;
 		if (fetch_array_elem(&value, op1, op2) == FAILURE) {
diff --git a/ext/opcache/tests/jit/fetch_dim_r_001.phpt b/ext/opcache/tests/jit/fetch_dim_r_001.phpt
index 3ff56263db683..819ec7edca655 100644
--- a/ext/opcache/tests/jit/fetch_dim_r_001.phpt
+++ b/ext/opcache/tests/jit/fetch_dim_r_001.phpt
@@ -30,7 +30,7 @@ function foo() {
 }
 foo();
 ?>
---EXPECT--
+--EXPECTF--
 int(1)
 int(3)
 int(2)
@@ -38,6 +38,8 @@ int(1)
 int(3)
 int(1)
 int(2)
+
+Deprecated: Using null as an array offset is deprecated, use an empty string instead in %s on line %d
 int(4)
 int(5)
 int(5)