diff --git a/Zend/tests/bug31720.phpt b/Zend/tests/bug31720.phpt
index 5b2644b58ed..c4680a4789e 100644
--- a/Zend/tests/bug31720.phpt
+++ b/Zend/tests/bug31720.phpt
@@ -10,5 +10,5 @@ array_walk($array, array($nonesuchvar,'show'));
 --EXPECTF--
 Notice: Undefined variable: nonesuchvar in %s on line %d
 
-Warning: array_walk() expects parameter 2 to be a valid callback, second array member is not a valid method in %s on line %d
+Warning: array_walk() expects parameter 2 to be a valid callback, first array member is not a valid class name or object in %s on line %d
 ===DONE===
diff --git a/Zend/zend_API.c b/Zend/zend_API.c
index 3676026d819..22ba08e55f2 100644
--- a/Zend/zend_API.c
+++ b/Zend/zend_API.c
@@ -2571,7 +2571,7 @@ ZEND_API zend_bool zend_is_callable_ex(zval *callable, uint check_flags, char **
 					}
 				} else {
 					if (zend_hash_num_elements(Z_ARRVAL_P(callable)) == 2) {
-						if (!obj) {
+						if (!obj || (Z_TYPE_PP(obj) != IS_STRING && Z_TYPE_PP(obj) != IS_OBJECT)) {
 							if (error) zend_spprintf(error, 0, "first array member is not a valid class name or object");
 						} else {
 							if (error) zend_spprintf(error, 0, "second array member is not a valid method");
diff --git a/ext/standard/tests/array/array_filter_variation2.phpt b/ext/standard/tests/array/array_filter_variation2.phpt
index 6cb05e10556..1aa262ba62b 100644
--- a/ext/standard/tests/array/array_filter_variation2.phpt
+++ b/ext/standard/tests/array/array_filter_variation2.phpt
@@ -134,7 +134,7 @@ NULL
 Warning: array_filter() expects parameter 2 to be a valid callback, array must have exactly two members in %s on line %d
 NULL
 -- Iteration 13 --
-Warning: array_filter() expects parameter 2 to be a valid callback, second array member is not a valid method in %s on line %d
+Warning: array_filter() expects parameter 2 to be a valid callback, first array member is not a valid class name or object in %s on line %d
 NULL
 -- Iteration 14 --
 Warning: array_filter() expects parameter 2 to be a valid callback, first array member is not a valid class name or object in %s on line %d
diff --git a/ext/standard/tests/array/array_map_variation17.phpt b/ext/standard/tests/array/array_map_variation17.phpt
index 18682f3286a..d9440bb2c17 100644
--- a/ext/standard/tests/array/array_map_variation17.phpt
+++ b/ext/standard/tests/array/array_map_variation17.phpt
@@ -141,11 +141,11 @@ Warning: array_map() expects parameter 1 to be a valid callback, array must have
 NULL
 
 -- Iteration 17 --
-Warning: array_map() expects parameter 1 to be a valid callback, second array member is not a valid method in %s on line %d
+Warning: array_map() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in %s on line %d
 NULL
 
 -- Iteration 18 --
-Warning: array_map() expects parameter 1 to be a valid callback, second array member is not a valid method in %s on line %d
+Warning: array_map() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in %s on line %d
 NULL
 
 -- Iteration 19 --
diff --git a/ext/standard/tests/array/uasort_variation2.phpt b/ext/standard/tests/array/uasort_variation2.phpt
index c106c1dfa0c..62832454106 100644
--- a/ext/standard/tests/array/uasort_variation2.phpt
+++ b/ext/standard/tests/array/uasort_variation2.phpt
@@ -147,7 +147,7 @@ Warning: uasort() expects parameter 2 to be a valid callback, array must have ex
 NULL
 -- Iteration 13 --
 
-Warning: uasort() expects parameter 2 to be a valid callback, second array member is not a valid method in %s on line %d
+Warning: uasort() expects parameter 2 to be a valid callback, first array member is not a valid class name or object in %s on line %d
 NULL
 -- Iteration 14 --