diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 1e675595e4..0861c38400 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -89,8 +89,6 @@ set(viewer_SOURCE_FILES
     lggbeammaps.cpp
     lggbeamscolors.cpp
     lggbeamcolormapfloater.cpp
-    lggbeamscolors.cpp
-    lggbeamcolormapfloater.cpp
     llagent.cpp
     llagentaccess.cpp
     llagentcamera.cpp