Index: Makefile
===================================================================
--- Makefile	(revision 302796)
+++ Makefile	(working copy)
@@ -194,7 +194,6 @@
 .endif
 
 .if ${PORT_OPTIONS:MTCLTK}
-USE_TK_NO_THREADS=	yes
 USE_TK =		84+
 CONFIGURE_ARGS+=	--with-tcltk \
 			--with-tcl-config=${TCL_LIBDIR}/tclConfig.sh \