diff --git a/statusd.py b/statusd.py
index 5d8dc11..382d855 100755
--- a/statusd.py
+++ b/statusd.py
@@ -146,6 +146,7 @@ def read_api(api):
     param 1: string
     return: string or boolean
     '''
+    logging.debug('Open API file: {}'.format(api))
     if os.access(api, os.R_OK):
        logging.debug('API is readable')
        with open(api, 'r') as api_file: