diff --git a/Alignment/CommonAlignment/python/tools/trackselectionRefitting.py b/Alignment/CommonAlignment/python/tools/trackselectionRefitting.py
index 0ecacf75e40d3..dff04b2a4b835 100644
--- a/Alignment/CommonAlignment/python/tools/trackselectionRefitting.py
+++ b/Alignment/CommonAlignment/python/tools/trackselectionRefitting.py
@@ -360,6 +360,10 @@ def getSequence(process, collection,
     ## put the sequence together ##
     ###############################
 
+    if "Fast" in TTRHBuilder:
+        print("PixelCPEFast has been chosen, here we must include CUDAService first")
+        process.load('HeterogeneousCore.CUDAServices.CUDAService_cfi')
+
     modules = []
     src = collection
     prevsrc = None