diff --git a/CMakeLists.txt b/CMakeLists.txt
index c5b93bc57..196293b9c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -569,10 +569,10 @@ if(CLIENT)
     text.cpp
     updater.cpp
     updater.h
-	opengl_sl_program.cpp
-	opengl_sl_program.h
-	opengl_sl.cpp
-	opengl_sl.h
+    opengl_sl_program.cpp
+    opengl_sl_program.h
+    opengl_sl.cpp
+    opengl_sl.h
   )
   set_glob(GAME_CLIENT GLOB_RECURSE src/game/client
     animstate.cpp