diff --git a/java/dex.go b/java/dex.go
index de36b18..40ee99d 100644
--- a/java/dex.go
+++ b/java/dex.go
@@ -63,6 +63,7 @@
 		// classes referenced by the app manifest.  Defaults to false.
 		No_aapt_flags *bool
 
+		// If true, optimize for size by removing unused resources. Defaults to false.
 		Shrink_resources *bool
 
 		// Flags to pass to proguard.