diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2e5b112d78..fab3c11e20 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -220,7 +220,7 @@ if(VITA OR PSP OR PS2 OR N3DS OR RISCOS)
   set(SDL_LOADSO_DEFAULT OFF)
 endif()
 
-if((RISCOS OR UNIX_SYS) AND NOT (LINUX OR NETBSD OR FREEBSD))
+if((RISCOS OR UNIX_SYS) AND NOT (LINUX OR NETBSD OR OPENBSD))
   set(SDL_OSS_DEFAULT ON)
 else()
   set(SDL_OSS_DEFAULT OFF)