diff --git a/utils/build-script-impl b/utils/build-script-impl
index f7cea89c4d3f0..568158e2f3187 100755
--- a/utils/build-script-impl
+++ b/utils/build-script-impl
@@ -2492,7 +2492,7 @@ for host in "${ALL_HOSTS[@]}"; do
                     DOTEST_EXTRA="${DOTEST_EXTRA} -Xcc -F${FOUNDATION_BUILD_DIR}"
                     DOTEST_EXTRA="${DOTEST_EXTRA} -I${FOUNDATION_BUILD_DIR}/swift"
                     DOTEST_EXTRA="${DOTEST_EXTRA} -I${LIBDISPATCH_SOURCE_DIR}"
-                    DOTEST_EXTRA="${DOTEST_EXTRA} -L${FOUNDATION_BUILD_DIR}"
+                    DOTEST_EXTRA="${DOTEST_EXTRA} -L${FOUNDATION_BUILD_DIR} -L${FOUNDATION_BUILD_DIR}/Foundation"
                     DOTEST_EXTRA="${DOTEST_EXTRA} -L${LIBDISPATCH_BUILD_DIR}"
                     DOTEST_EXTRA="${DOTEST_EXTRA} -L${LIBDISPATCH_BUILD_DIR}/src"
                     DOTEST_EXTRA="${DOTEST_EXTRA} -Xlinker -rpath -Xlinker ${LIBDISPATCH_BUILD_DIR}/src"