diff --git a/bootstrap.bash b/bootstrap.bash
index ca0c062..551ba72 100755
--- a/bootstrap.bash
+++ b/bootstrap.bash
@@ -27,8 +27,8 @@
 if [[ $# -eq 0 ]]; then
     sed -e "s|@@SrcDir@@|${SRCDIR}|" \
         -e "s|@@PrebuiltOS@@|${PREBUILTOS}|" \
-        ${SRCDIR}/build/soong/soong.bootstrap.in > .soong.bootstrap
-    ln -sf ${SRCDIR}/build/soong/soong.bash soong
+        "${SRCDIR}/build/soong/soong.bootstrap.in" > .soong.bootstrap
+    ln -sf "${SRCDIR}/build/soong/soong.bash" soong
 fi
 
-${SRCDIR}/build/blueprint/bootstrap.bash "$@"
+"${SRCDIR}/build/blueprint/bootstrap.bash" "$@"