--- vnstat-1.10.orig/man/vnstat.conf.5
+++ vnstat-1.10/man/vnstat.conf.5
@@ -113,7 +113,7 @@
 
 .TP
 .BI Sampletime
-Defines how many seconds the -tr option will sample traffic. (vnstat only)
+Defines how many seconds the \-tr option will sample traffic. (vnstat only)
 
 .TP
 .BI TrafficlessDays