diff --git a/platformio/builder/main.py b/platformio/builder/main.py
index f29f2f85..d1a8763d 100644
--- a/platformio/builder/main.py
+++ b/platformio/builder/main.py
@@ -117,8 +117,7 @@ env.LoadPioPlatform()
 
 env.SConscriptChdir(0)
 env.SConsignFile(
-    join("$PROJECTBUILD_DIR",
-         ".sconsign.dblite" if PY2 else ".sconsign3.dblite"))
+    join("$BUILD_DIR", ".sconsign.dblite" if PY2 else ".sconsign3.dblite"))
 
 for item in env.GetExtraScripts("pre"):
     env.SConscript(item, exports="env")