diff --git a/mk/sub.mk b/mk/sub.mk
index b01f34329e8..63d3d924f71 100644
--- a/mk/sub.mk
+++ b/mk/sub.mk
@@ -21,8 +21,8 @@ NATIVE_BUILDS += \
 	libwapcaplet \
 	mozjs \
 	skia \
-    nss \
-    nspr \
+	nss \
+	nspr \
 	$(NULL)
 
 # NOTE: the make magic can only compute transitive build dependencies,