diff --git a/src/build.sh b/src/build.sh
index ecd7c6e..e3f0242 100644
--- a/src/build.sh
+++ b/src/build.sh
@@ -14,10 +14,10 @@ echo $BUILDPATH
 
 #unzip this or something
 curl -RO "$DOWNLOAD"
-tar -xzf "firefox-$VERSION.source.tar.xz src"
+tar -xzf "firefox-$VERSION.source.tar.xz"
 
 
-cd "src/js/src"
+cd "firefox-$VERSION.source/js/src"
 
 mkdir _build
 cd _build