diff --git a/fdroidserver/scanner.py b/fdroidserver/scanner.py
index 8f66f65b..f768e678 100644
--- a/fdroidserver/scanner.py
+++ b/fdroidserver/scanner.py
@@ -200,6 +200,9 @@ def scan_source(build_dir, build):
                     count += handleproblem('usual supect \'%s\'' % name, path_in_build_dir, filepath)
                 warnproblem('JAR file', path_in_build_dir)
 
+            elif ext == 'aar':
+                warnproblem('AAR file', path_in_build_dir)
+
             elif ext == 'java':
                 if not os.path.isfile(filepath):
                     continue