diff --git a/build.sh b/build.sh
index f0f94e8..f709ed4 100755
--- a/build.sh
+++ b/build.sh
@@ -61,7 +61,7 @@ echo " Building ${TCLDP_ROOT}"
 echo "===================================================================="
 echo ""
 cd ${TCLDP_ROOT}
-./configure --with-tcl=${TCL_ROOT} --prefix=${DISTDIR}
+./configure --with-tcl=${DISTDIR} --prefix=${DISTDIR}
 make install
 cd ${WORLD_ROOT}