diff --git a/knot_ b/knot_
index bc21c4c..ffbc0b0 100755
--- a/knot_
+++ b/knot_
@@ -24,7 +24,7 @@ def responses(stats, config):
     if config:
         print("graph_title Knot responses")
         print("graph_category dns")
-        print("graph_vlabel responses")
+        print("graph_vlabel responses / ${graph_period}")
         print("graph_args --base 1000 --lower-limit 0")
         for code in responses_stats:
             print(f"{code}.label {code}")
@@ -52,7 +52,7 @@ def proto(stats, config):
     if config:  # Configure the plugin
         print("graph_title Knot protocols")
         print("graph_category dns")
-        print("graph_vlabel numbers of requests")
+        print("graph_vlabel numbers of requests / ${graph_period}")
         print("graph_args --base 1000 --lower-limit 0")
         for proto in proto_stats:
             print(f"{proto}.label {proto}")
@@ -66,6 +66,7 @@ def proto(stats, config):
 if __name__ == '__main__':
     # Retrieve datas :
     file = getenv('stats_file_path')
+    munin_time = getenv('munin_time', 300)
     with open(file, "r") as stats_file:
         stats = yaml.safe_load(stats_file)
     if not "mod-stats" in stats:
@@ -75,8 +76,8 @@ if __name__ == '__main__':
     else:
         config = False
     if "responses" in argv[0]:
-        responses(stats, config)
+        responses(stats, config, munin_time)
     elif "proto" in argv[0]:
-        proto(stats, config)
+        proto(stats, config, munin_time)
     else:
         pass  # Nothing happens if no "munin underscore args"