diff --git a/pisi/operations/build.py b/pisi/operations/build.py
index 91319252..b69776b9 100644
--- a/pisi/operations/build.py
+++ b/pisi/operations/build.py
@@ -1201,13 +1201,13 @@ def build_until(pspec, state):
         __buildState_fetch(pb)
         return
 
+    # from now on build dependencies are needed
+    pb.check_build_dependencies()
+
     if state == "unpack":
         __buildState_unpack(pb, last)
         return
 
-    # from now on build dependencies are needed
-    pb.check_build_dependencies()
-
     if state == "setup":
         __buildState_setupaction(pb, last)
         return