diff --git a/Detector/DetCRD/CMakeLists.txt b/Detector/DetCRD/CMakeLists.txt
index cc203a0a31fcf219b0c4c242811e1aec86dee320..4a92fed45c70d5483398dc43e4e8abecd79ef302 100644
--- a/Detector/DetCRD/CMakeLists.txt
+++ b/Detector/DetCRD/CMakeLists.txt
@@ -18,7 +18,7 @@ find_package(ROOT COMPONENTS MathCore GenVector Geom REQUIRED)
 gaudi_add_module(DetCRD
                  SOURCES src/Calorimeter/CRDEcal_v01.cpp
                          src/Other/CRDBeamPipe_v01_geo.cpp
-		  	                src/Tracker/SiTrackerSkewRing_v01_geo.cpp
+                         src/Tracker/SiTrackerSkewRing_v01_geo.cpp
 
 		 LINK ${DD4hep_COMPONENT_LIBRARIES}
 )