diff --git a/src/main/java/com/google/acai/GuiceberryCompatibilityModule.java b/src/main/java/com/google/acai/GuiceberryCompatibilityModule.java
index dd21088..4ebeccd 100644
--- a/src/main/java/com/google/acai/GuiceberryCompatibilityModule.java
+++ b/src/main/java/com/google/acai/GuiceberryCompatibilityModule.java
@@ -100,7 +100,8 @@ private static void invokeIfBound(Injector injector, MethodReference method) thr
     } catch (InvocationTargetException e) {
       throw e.getCause();
     } catch (ReflectiveOperationException e) {
-      throw new RuntimeException("Failed to invoke run on GuiceBerryEnvMain", e);
+      throw new RuntimeException(
+          "Failed to invoke " + method.methodName() + " on " + method.className(), e);
     }
   }