diff --git a/analyze-repo-redundancy.py b/analyze-repo-redundancy.py
index 2f5a83e..89e5072 100755
--- a/analyze-repo-redundancy.py
+++ b/analyze-repo-redundancy.py
@@ -44,8 +44,8 @@ def main(args):
         rid = c.execute("""
 SELECT id FROM repodirs WHERE name = ? OR path = ?
 """, [repo, repo]).fetchall()
-        if rid is None:
-            print 'Repository "%" not found.' % repo
+        if not rid:
+            print 'Repository "%s" not found.' % repo
             exit(1)
         repodirs.append(rid[0][0])
     if not repodirs: