diff --git a/devel/libdistance/Makefile b/devel/libdistance/Makefile
index 70d34d8e778f..1a1157cb2eb3 100644
--- a/devel/libdistance/Makefile
+++ b/devel/libdistance/Makefile
@@ -23,6 +23,10 @@ CFLAGS+=	-fPIC
 pre-build:
 	mkdir -p ${STAGEDIR}/usr/local/tests/${PORTNAME}
 
+post-patch:
+	${REINPLACE_CMD} 's|%%TCL_SHLIB_VER%%|${TCL_SHLIB_VER}|' \
+	    ${WRKSRC}/swig/tcl/Makefile
+
 MAKE_JOBS_UNSAFE=	yes
 
 .include <bsd.port.mk>
diff --git a/devel/libdistance/files/patch-swig_tcl_Makefile b/devel/libdistance/files/patch-swig_tcl_Makefile
index 49367bbc41b5..634955cb232f 100644
--- a/devel/libdistance/files/patch-swig_tcl_Makefile
+++ b/devel/libdistance/files/patch-swig_tcl_Makefile
@@ -17,7 +17,7 @@
 -distance.so: distance_wrap.o
 -	gcc -shared  distance_wrap.o ../../libdistance.a \
 -	    -o distance.so
-+CFLAGS=	-I ../.. `pkg-config --cflags tcl` -fPIC
++CFLAGS=	-I ../.. `pkg-config --cflags tcl%%TCL_SHLIB_VER%%` -fPIC
 +SWIG?=	swig
  
 -clean: