diff --git a/Mkfiles/openwcom.mak b/Mkfiles/openwcom.mak
index b1140d02..64d44441 100644
--- a/Mkfiles/openwcom.mak
+++ b/Mkfiles/openwcom.mak
@@ -34,7 +34,7 @@ RUNPERL         = $(PERL) $(PERLFLAGS)
 RM_F		= -del /f
 LN_S		= copy
 EMPTY		= copy nul:
-SIDE		= @rem Created by side effect
+SIDE		= %null Created by side effect
 
 MAKENSIS        = makensis