diff --git a/plugins/munin/munin_events b/plugins/munin/munin_events
index 26498de3..2a355bd9 100755
--- a/plugins/munin/munin_events
+++ b/plugins/munin/munin_events
@@ -39,7 +39,7 @@ INFO, WARNING, ERROR, FATAL.
 
 =head1 VERSION
 
-  1.2.20161017
+  1.2.20160514
 
 =head1 AUTHOR
 
@@ -70,9 +70,9 @@ logtail_bin=${logtail_bin:-/usr/sbin/logtail2}
 do_value() {
     FIELD="$1"
     EVENT_LABEL="$2"
-    EVENT_COUNT="$("$logtail_bin" -t "$muninupdate" 2> /dev/null | grep -c "^[0-9/: ]\{19\} \[${EVENT_LABEL}\]")"
 
-    if ! [ -z "$(echo "$EVENT_COUNT" | sed 's|[0-9]\+||')" ]; then
+    EVENT_COUNT="$("$logtail_bin" -t "$muninupdate" 2> /dev/null | grep -c "^[0-9/: ]\{19\} \[${EVENT_LABEL}\]")"
+    if echo "$EVENT_COUNT" | grep -q "[^0-9]"; then
         echo "Cannot determine event count" 1>&2
         exit 10
     fi