diff --git a/gson/src/main/java/com/google/gson/internal/ConstructorConstructor.java b/gson/src/main/java/com/google/gson/internal/ConstructorConstructor.java
index ef7ae630..971a0b8b 100644
--- a/gson/src/main/java/com/google/gson/internal/ConstructorConstructor.java
+++ b/gson/src/main/java/com/google/gson/internal/ConstructorConstructor.java
@@ -91,11 +91,12 @@ public final class ConstructorConstructor {
             return (T) constructor.newInstance(args);
           } catch (InstantiationException e) {
             // TODO: JsonParseException ?
-            throw new RuntimeException(e);
+            throw new RuntimeException("Failed to invoke " + constructor + " with no args", e);
           } catch (InvocationTargetException e) {
             // TODO: don't wrap if cause is unchecked!
             // TODO: JsonParseException ?
-            throw new RuntimeException(e.getTargetException());
+            throw new RuntimeException("Failed to invoke " + constructor + " with no args",
+                e.getTargetException());
           } catch (IllegalAccessException e) {
             throw new AssertionError(e);
           }