diff --git a/cmake/3rdparty.cmake b/cmake/3rdparty.cmake
index 3d1325dea..37ac30b70 100644
--- a/cmake/3rdparty.cmake
+++ b/cmake/3rdparty.cmake
@@ -1,5 +1,3 @@
-include_guard()
-
 function(get_clang_tidy_ignored_files OUTVAR)
   set(3RD_PARTY_SOURCES
       # Public GL headers