diff --git a/CMakeLists.txt b/CMakeLists.txt
index c7c076a2..3d064ac0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -584,7 +584,11 @@ endif()
 if (NOT MSVC)
   set(WARNING_FLAGS -Wall -Wextra -Wno-unused-parameter)
   if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    list(APPEND WARNING_FLAGS -Wno-cast-function-type)
+    if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0.0)
+      # nothing
+    else()
+      list(APPEND WARNING_FLAGS -Wno-cast-function-type)
+    endif()
   endif()
   if (WARNINGS_ARE_ERRORS)
     list(APPEND WARNING_FLAGS -Werror)