diff --git a/build.sh b/build.sh
index c97d514..3873bd0 100755
--- a/build.sh
+++ b/build.sh
@@ -5,7 +5,7 @@ ARCHIE_ROOT="${WORLD_ROOT}/archie"
 PROSPERO_ROOT="${WORLD_ROOT}/prospero"
 BERKDB_ROOT="${WORLD_ROOT}/berkdb"
 TCL_ROOT="${WORLD_ROOT}/tcl7.3"
-TCLDP_ROOT="${WORLD_ROOT}/tcl-dp"
+TCLDP_ROOT="${WORLD_ROOT}/tcl-dp/unix"
 TK_ROOT="${WORLD_ROOT}/tk3.6"
 SOLOS=$(uname -s)
 SOLVER=$(uname -r)
@@ -43,3 +43,9 @@ cd ${TK_ROOT}
 ./configure --prefix=${DISTDIR}
 make install
 cd ${WORLD_ROOT}
+
+cd ${TCLDP_ROOT}
+./configure --prefix=${DISTDIR}
+make install
+cd ${WORLD_ROOT}
+