--- a/gitstats	2016-04-01 09:46:31.000000000 -0300
+++ b/gitstats	2016-04-01 09:46:18.458667610 -0300
@@ -327,7 +327,7 @@
 
 		# Collect revision statistics
 		# Outputs "<stamp> <date> <time> <timezone> <author> '<' <mail> '>'"
-		lines = getpipeoutput(['git rev-list --pretty=format:"%%at %%ai %%aN <%%aE>" %s' % getlogrange('HEAD'), 'grep -v ^commit']).split('\n')
+		lines = getpipeoutput(['git rev-list --pretty=format:"%%at %%ai %%aN <%%aE>" %s' % getlogrange('HEAD'), 'grep -av ^commit']).split('\n')
 		for line in lines:
 			parts = line.split(' ', 4)
 			author = ''