diff --git a/java/robolectric.go b/java/robolectric.go
index 26f1e9d1d..b87ee0d6d 100644
--- a/java/robolectric.go
+++ b/java/robolectric.go
@@ -39,7 +39,7 @@ type robolectricProperties struct {
 
 	Test_options struct {
 		// Timeout in seconds when running the tests.
-		Timeout *string
+		Timeout *int64
 	}
 }