diff --git a/[refs] b/[refs]
index b2a801df4b58a..f6917cb74ac40 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/l1tmuon-upgrade-dev: 49297324e87f9eec692e04fceef7e1db934b349d
+refs/heads/l1tmuon-upgrade-dev: 0ce56cf0d36a4c0513af1aa159709acda68d79db
diff --git a/trunk/MagneticField/ParametrizedEngine/BuildFile b/trunk/MagneticField/ParametrizedEngine/BuildFile
index c7e228f6d9f1f..c7d8ac4df26b3 100644
--- a/trunk/MagneticField/ParametrizedEngine/BuildFile
+++ b/trunk/MagneticField/ParametrizedEngine/BuildFile
@@ -1,5 +1,6 @@
 <use name=FWCore/Framework>
 <use name=DataFormats/GeometryVector>
+<use name=MagneticField/Engine>
 
 <export>
   <lib name=MagneticFieldParametrizedEngine>
diff --git a/trunk/MagneticField/UniformEngine/BuildFile b/trunk/MagneticField/UniformEngine/BuildFile
index a61877dadecaf..473ac7010f13c 100644
--- a/trunk/MagneticField/UniformEngine/BuildFile
+++ b/trunk/MagneticField/UniformEngine/BuildFile
@@ -1,3 +1,4 @@
+<use name=MagneticField/Engine>
 <export>
   <use name=MagneticField/Engine>
   <lib name=MagneticFieldUniformEngine>