diff --git a/opening_hours.js b/opening_hours.js
index 28d8a0a7..1f377757 100644
--- a/opening_hours.js
+++ b/opening_hours.js
@@ -4986,7 +4986,7 @@
 				} else if (matchTokens(tokens, at - 1, ',')) { // additional rule
 					throw formatWarnErrorMessage(
 						nrule,
-						at,
+						at - 1,
 						'An additional rule does not make sense here. Just use a ";" as rule separator.'
 						+ ' See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator');
 				} else {
@@ -5186,7 +5186,7 @@
 				} else if (matchTokens(tokens, at - 1, ',')) { // additional rule
 					throw formatWarnErrorMessage(
 						nrule,
-						at,
+						at - 1,
 						'An additional rule does not make sense here. Just use a ";" as rule separator.'
 						+ ' See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator');
 				} else {
@@ -5489,7 +5489,7 @@
 				} else if (matchTokens(tokens, at - 1, ',')) { // additional rule
 					throw formatWarnErrorMessage(
 						nrule,
-						at,
+						at - 1,
 						'An additional rule does not make sense here. Just use a ";" as rule separator.'
 						+ ' See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator');
 				} else {
@@ -5594,7 +5594,7 @@
 				} else if (matchTokens(tokens, at - 1, ',')) { // additional rule
 					throw formatWarnErrorMessage(
 						nrule,
-						at,
+						at - 1,
 						'An additional rule does not make sense here. Just use a ";" as rule separator.'
 						+ ' See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator');
 				} else {
diff --git a/test.log b/test.log
index b6913a21..20ad7b76 100644
--- a/test.log
+++ b/test.log
@@ -1758,7 +1758,7 @@ week 2-53 00:00-24:00::: <--- (Unexpected token: "timesep" This means that the s
 week 2-53 00: <--- (Missing minutes in time range after: "timesep")
 
 "Incorrect syntax which should throw an error" for "week 2-52/2 We, week 1-53/2 Sa 0:00-24:00; 00:23-00:42 unknown "warning at correct position?"": PASSED
-week 2-52/2 We, week  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+week 2-52/2 We,  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "(sunrise+01:00-sunset; 00:23-00:42 unknown "warning at correct position?"": PASSED
 (sunrise+01:00- <--- (Calculcation with variable time is not in the right syntax. Missing ")".)
@@ -1836,7 +1836,7 @@ PH + 2 day <--- (There should be no reason to differ more than 1 days from a pub
 Su- <--- (Unexpected token: "-" This means that the syntax is not valid at that point or it is currently not supported.) 
 
 "Incorrect syntax which should throw an error" for "2012, Jan; 00:23-00:42 unknown "warning at correct position?"": PASSED
-2012, Jan <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+2012,  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "easter + 370 days; 00:23-00:42 unknown "warning at correct position?"": PASSED
 easter + 370 days <--- (There should be no reason to differ more than 200 days from a event like easter. If so tell us …)
@@ -1851,7 +1851,7 @@ easter - 2 days -  <--- (Unexpected token: "-" This means that the syntax is not
 Jan,, <--- (Unexpected token in month range: ,)
 
 "Incorrect syntax which should throw an error" for "Mo,,Th; 00:23-00:42 unknown "warning at correct position?"": PASSED
-Mo,, <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+Mo, <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "12:00-15:00/60; 00:23-00:42 unknown "warning at correct position?"": PASSED
 12:00-15:00/60 <--- (opening_hours is running in "time range mode". Found point in time.)
@@ -1971,19 +1971,19 @@ Tu 23:59-48:00+ <--- (Time spanning more than two midnights not supported)
 || <--- (Rule before fallback rule does not contain anything useful)
 
 "Incorrect syntax which should throw an error" for "PH, Aug-Sep 00:00-24:00; 00:23-00:42 unknown "warning at correct position?"": PASSED
-PH, Aug <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+PH,  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "We off, Mo,Tu,Th-Su,PH, Jun-Aug We 11:00-14:00,17:00+; 00:23-00:42 unknown "warning at correct position?"": PASSED
-We off, Mo,Tu,Th-Su,PH, Jun <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+We off, Mo,Tu,Th-Su,PH,  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "We, Aug Mo; 00:23-00:42 unknown "warning at correct position?"": PASSED
-We, Aug  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+We,  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "2014, Aug Mo; 00:23-00:42 unknown "warning at correct position?"": PASSED
-2014, Aug  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+2014,  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "week 5, Aug Mo; 00:23-00:42 unknown "warning at correct position?"": PASSED
-week 5, Aug  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
+week 5,  <--- (An additional rule does not make sense here. Just use a ";" as rule separator. See https://wiki.openstreetmap.org/wiki/Key:opening_hours/specification#explain:additional_rule_separator)
 
 "Incorrect syntax which should throw an error" for "Jun 2-5, week 5 00:00-24:00; 00:23-00:42 unknown "warning at correct position?"": FAILED
 "Missing information (e.g. country or holidays not defined in this lib)" for "PH": PASSED