diff --git a/Makefile b/Makefile
index a45baa7..3814b02 100644
--- a/Makefile
+++ b/Makefile
@@ -59,9 +59,14 @@ $(O)/squashfs.exclude: \
 	mkdir -p $(O)
 	sort $^ > $@
 
+$(O)/squashfs.pseudo: \
+		$(wildcard $(CONFIGDIR)/squashfs.pseudo)
+	sort /dev/null $^ > $@
+
 $(IMAGESDIR)/rootfs.squashfs: \
 		build-squashfs.sh \
 		$(O)/squashfs.exclude \
+		$(O)/squashfs.pseudo \
 		$(O)/.ready
 	./build-squashfs.sh "$(O)" "$(IMAGESDIR)"
 
diff --git a/build-squashfs.sh b/build-squashfs.sh
index c90af07..c622d07 100755
--- a/build-squashfs.sh
+++ b/build-squashfs.sh
@@ -14,6 +14,7 @@ mksquashfs \
     "${IMAGESDIR}"/rootfs.squashfs \
     -comp gzip \
     -ef "${O}"/squashfs.exclude \
+    -pf "${O}"/squashfs.pseudo \
     -no-exports \
     -noappend \
     -wildcards