diff --git a/development/cmake/ConfigureChecks.cmake b/development/cmake/ConfigureChecks.cmake
index 7e6707ca59..ef02a85157 100644
--- a/development/cmake/ConfigureChecks.cmake
+++ b/development/cmake/ConfigureChecks.cmake
@@ -232,15 +232,6 @@ check_cxx_source_compiles(
   "
 HAVE_DEF_MAKE_UNIQUE)
 
-check_cxx_source_compiles(
-  "
-  #include <mutex>
-  static std::once_flag flag;
-  int main() {
-    std::call_once(flag, [](){ return; });
-    return(0);
-  }
-  "
 LYX_USE_STD_CALL_ONCE)
 
 if (ENCHANT_FOUND)