diff --git a/Common/GTesting/CMakeLists.txt b/Common/GTesting/CMakeLists.txt
index b06af0202..8d0952ebc 100644
--- a/Common/GTesting/CMakeLists.txt
+++ b/Common/GTesting/CMakeLists.txt
@@ -11,7 +11,7 @@ add_executable(CommonGTest
   itkImageGridSamplerGTest.cxx
   itkImageRandomCoordinateSamplerGTest.cxx
   itkImageRandomSamplerGTest.cxx
-  itkImageSamplerGTest
+  itkImageSamplerGTest.cxx
   itkParameterMapInterfaceTest.cxx
   )