--- source/darkplaces/BSDmakefile.orig	2015-08-25 12:10:24 UTC
+++ source/darkplaces/BSDmakefile
@@ -158,7 +158,7 @@ LIB_SOUND=$(LIB_SND_BSD)
 
 CFLAGS_MAKEDEP=-MD
 .ifdef DP_FS_BASEDIR
-CFLAGS_FS=-DDP_FS_BASEDIR='\"$(DP_FS_BASEDIR)\"'
+CFLAGS_FS=-DDP_FS_BASEDIR='\\\"$(DP_FS_BASEDIR)\\\"'
 .else
 CFLAGS_FS=
 .endif