diff --git a/tests/classes/inheritance_003.phpt b/tests/classes/inheritance_003.phpt
new file mode 100755
index 00000000000..14ff1be793e
--- /dev/null
+++ b/tests/classes/inheritance_003.phpt
@@ -0,0 +1,20 @@
+--TEST--
+ZE2 method inheritance without interfaces
+--FILE--
+<?php
+
+class A
+{
+	function f($x) {}
+}
+
+class B extends A
+{
+	function f() {}
+}
+
+?>
+===DONE===
+--EXPECTF--
+
+Fatal error: Declaration of B::f() must be compatible with that of A::f() in %sinheritance_003.php on line %d
diff --git a/tests/classes/inheritance_004.phpt b/tests/classes/inheritance_004.phpt
new file mode 100755
index 00000000000..1dc5fa0c5fb
--- /dev/null
+++ b/tests/classes/inheritance_004.phpt
@@ -0,0 +1,20 @@
+--TEST--
+ZE2 method inheritance without interfaces
+--FILE--
+<?php
+
+class A
+{
+	function f() {}
+}
+
+class B extends A
+{
+	function f($x) {}
+}
+
+?>
+===DONE===
+--EXPECTF--
+
+Fatal error: Declaration of B::f() must be compatible with that of A::f() in %sinheritance_004.php on line %d