diff --git a/fdroidserver/mirror.py b/fdroidserver/mirror.py
index 224fcc5a..89e5ed66 100644
--- a/fdroidserver/mirror.py
+++ b/fdroidserver/mirror.py
@@ -268,7 +268,8 @@ def main():
                 urls[icondir].append(url)
 
         for icondir in icondirs:
-            _run_wget(os.path.join(basedir, section, icondir), urls[icondir])
+            if icondir in urls:
+                _run_wget(os.path.join(basedir, section, icondir), urls[icondir])
 
 
 if __name__ == "__main__":