diff -r fd430e352427 -r b8055b38b252 src/hotspot/share/oops/instanceKlass.cpp
--- a/src/hotspot/share/oops/instanceKlass.cpp	Tue Jun 19 12:25:42 2018 +0200
+++ b/src/hotspot/share/oops/instanceKlass.cpp	Fri Jun 15 12:31:28 2018 +0200
@@ -2641,7 +2641,12 @@
     // If the interface isn't implemented by the receiver class,
     // the VM should throw IncompatibleClassChangeError.
     if (cnt >= nof_interfaces) {
-      THROW_NULL(vmSymbols::java_lang_IncompatibleClassChangeError());
+      ResourceMark rm(THREAD);
+      stringStream ss;
+      ss.print("Receiver class %s does not implement "
+               "the interface %s defining the method to be called",
+               class_loader_and_module_name(), holder->class_loader_and_module_name());
+      THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), ss.as_string());
     }
 
     Klass* ik = ioe->interface_klass();