diff --git a/comptime.bat b/comptime.bat
index b8450ff64944a46bf23f15a25c65f7455209a57b..119b3bb5c3e3f8d42c2b16fbe7fdd5ca957542b1 100644
--- a/comptime.bat
+++ b/comptime.bat
@@ -20,6 +20,7 @@ goto filwri
 :svnrev
 set BRA=Subversion
 FOR /F "usebackq" %%s IN (`svnversion .`) DO @SET REV=%%s
+set REV=r%REV%
 goto filwri
 
 :filwri