diff --git a/kimai2/kimaiMeasures.inc b/kimai2/kimaiMeasures.inc
index 117963f..1ebbbe1 100644
--- a/kimai2/kimaiMeasures.inc
+++ b/kimai2/kimaiMeasures.inc
@@ -83,4 +83,4 @@ Measure=String
 String=#activeHrs#:[MeasureMins]
 DynamicVariables=1
 RegExpSubstitute=1
-Substitute="(:)(\d)$":"\10\2 ","(:\d\d)$":"\1 ","^:\d\d $":"","\#activeHrs\#:\d\d":""
\ No newline at end of file
+Substitute="(:)(\d)$":"\10\2 ","(:\d\d)$":"\1 ","^:\d+ *$":"","\#activeHrs\#:\d\d":""
\ No newline at end of file