diff --git a/plugins/solr/index.py b/plugins/solr/index.py
index 0538fa4a6..d8119c61a 100755
--- a/plugins/solr/index.py
+++ b/plugins/solr/index.py
@@ -342,4 +342,4 @@ if __name__ == "__main__":
     elif func == 'script_incr':
         print(scriptIncr())
     else:
-        print 'error'
+        print('error')