diff --git a/lib/fail2ban.pm b/lib/fail2ban.pm
index 871519d..fb127db 100644
--- a/lib/fail2ban.pm
+++ b/lib/fail2ban.pm
@@ -390,7 +390,7 @@ sub fail2ban_cgi {
 				"--title=$str  ($tf->{nwhen}$tf->{twhen})",
 				"--start=-$tf->{nwhen}$tf->{twhen}",
 				"--imgformat=PNG",
-				"--vertical-label=bans/s",
+				"--vertical-label=Bans/s",
 				"--width=$width",
 				"--height=$height",
 				@riglim,
@@ -418,7 +418,7 @@ sub fail2ban_cgi {
 					"--title=$str  ($tf->{nwhen}$tf->{twhen})",
 					"--start=-$tf->{nwhen}$tf->{twhen}",
 					"--imgformat=PNG",
-					"--vertical-label=bans/s",
+					"--vertical-label=Bans/s",
 					"--width=$width",
 					"--height=$height",
 					@riglim,