diff --git a/src/sbbs3/GNUmakefile b/src/sbbs3/GNUmakefile
index a21c04462e10d0e221ed4f3cf84ab162dea8c870..16bd94e75e63dbc2227a139b7295aae3230f3d24 100644
--- a/src/sbbs3/GNUmakefile
+++ b/src/sbbs3/GNUmakefile
@@ -21,7 +21,7 @@ OFILE	=	o
 
 LD		=	ld
 LIBFILE	=	.a
-XPDEV	=	..\xpdev
+XPDEV	=	../xpdev
 
 ifndef $(os)
 os		=	$(shell uname)