diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index 4fbcd72..c46095a 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -1113,6 +1113,9 @@
     # problem as libicu contains the only copy target which happens to be a
     # leaf node.
     return None
+  elif target.type == 'java_group':
+    # Java targets are handled outside of create_modules_from_target.
+    return None
   else:
     raise Error('Unknown target %s (%s)' % (target.name, target.type))