diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index e19c5033793..264b65c5768 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -3634,7 +3634,7 @@ ZEND_VM_HOT_OBJ_HANDLER(112, ZEND_INIT_METHOD_CALL, CONST|TMPVAR|UNUSED|THIS|CV,
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((OP2_TYPE == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 			FREE_OP2();
 			if ((OP1_TYPE & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
diff --git a/Zend/zend_vm_execute.h b/Zend/zend_vm_execute.h
index af9ea669b6b..a1d102b16d0 100644
--- a/Zend/zend_vm_execute.h
+++ b/Zend/zend_vm_execute.h
@@ -7220,7 +7220,7 @@ static ZEND_VM_COLD ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CONST == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if ((IS_CONST & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -9784,7 +9784,7 @@ static ZEND_VM_COLD ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), (((IS_TMP_VAR|IS_VAR) == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 			zval_ptr_dtor_nogc(EX_VAR(opline->op2.var));
 			if ((IS_CONST & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -12266,7 +12266,7 @@ static ZEND_VM_COLD ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CV == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if ((IS_CONST & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -16659,7 +16659,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_SPEC_TMPVAR_C
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CONST == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if (((IS_TMP_VAR|IS_VAR) & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -18152,7 +18152,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_SPEC_TMPVAR_T
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), (((IS_TMP_VAR|IS_VAR) == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 			zval_ptr_dtor_nogc(EX_VAR(opline->op2.var));
 			if (((IS_TMP_VAR|IS_VAR) & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -19559,7 +19559,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_SPEC_TMPVAR_C
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CV == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if (((IS_TMP_VAR|IS_VAR) & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -34945,7 +34945,7 @@ static ZEND_VM_HOT ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_S
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CONST == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if ((IS_UNUSED & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -37114,7 +37114,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_SPEC_UNUSED_T
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), (((IS_TMP_VAR|IS_VAR) == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 			zval_ptr_dtor_nogc(EX_VAR(opline->op2.var));
 			if ((IS_UNUSED & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -39759,7 +39759,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_SPEC_UNUSED_C
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CV == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if ((IS_UNUSED & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -44875,7 +44875,7 @@ static ZEND_VM_HOT ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_S
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CONST == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if ((IS_CV & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -48769,7 +48769,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_SPEC_CV_TMPVA
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), (((IS_TMP_VAR|IS_VAR) == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 			zval_ptr_dtor_nogc(EX_VAR(opline->op2.var));
 			if ((IS_CV & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
@@ -54364,7 +54364,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_INIT_METHOD_CALL_SPEC_CV_CV_HA
 		fbc = obj->handlers->get_method(&obj, Z_STR_P(function_name), ((IS_CV == IS_CONST) ? (RT_CONSTANT(opline, opline->op2) + 1) : NULL));
 		if (UNEXPECTED(fbc == NULL)) {
 			if (EXPECTED(!EG(exception))) {
-				zend_undefined_method(obj->ce, Z_STR_P(function_name));
+				zend_undefined_method(orig_obj->ce, Z_STR_P(function_name));
 			}
 
 			if ((IS_CV & (IS_VAR|IS_TMP_VAR)) && GC_DELREF(orig_obj) == 0) {
diff --git a/ext/spl/tests/gh16574.phpt b/ext/spl/tests/gh16574.phpt
new file mode 100644
index 00000000000..0bcc6611a22
--- /dev/null
+++ b/ext/spl/tests/gh16574.phpt
@@ -0,0 +1,15 @@
+--TEST--
+GH-16574 (Incorrect error "undefined method" messages)
+--CREDITS--
+YuanchengJiang
+--FILE--
+<?php
+$i = new ArrayIterator([1,1,1,1,1]);
+$i = new CachingIterator($i, CachingIterator::FULL_CACHE);
+$i->doesnotexist("x");
+?>
+--EXPECTF--
+Fatal error: Uncaught Error: Call to undefined method CachingIterator::doesnotexist() in %s:%d
+Stack trace:
+#0 {main}
+  thrown in %s on line %d