diff --git a/libs/binder/ndk/ibinder.cpp b/libs/binder/ndk/ibinder.cpp
index 785e032..717beec 100644
--- a/libs/binder/ndk/ibinder.cpp
+++ b/libs/binder/ndk/ibinder.cpp
@@ -82,8 +82,8 @@
         const String16& currentDescriptor = mClazz->getInterfaceDescriptor();
         if (newDescriptor == currentDescriptor) {
             LOG(ERROR) << __func__ << ": Class descriptors '" << currentDescriptor
-                       << "' match during associateClass, but they are different class objects. "
-                          "Class descriptor collision?";
+                       << "' match during associateClass, but they are different class objects ("
+                       << clazz << " vs " << mClazz << "). Class descriptor collision?";
         } else {
             LOG(ERROR) << __func__
                        << ": Class cannot be associated on object which already has a class. "