diff --git a/externals/CMakeLists.txt b/externals/CMakeLists.txt
index 8e1fc696a8..04007a5385 100644
--- a/externals/CMakeLists.txt
+++ b/externals/CMakeLists.txt
@@ -193,7 +193,7 @@ if (ANDROID)
    endif()
 endif()
 
-if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+if (UNIX AND NOT APPLE)
     add_subdirectory(gamemode)
 endif()
 
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index bbc55eb56a..2c6fc76570 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -182,7 +182,7 @@ if(ANDROID)
     )
 endif()
 
-if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+if (UNIX AND NOT APPLE)
   target_sources(common PRIVATE
     linux/gamemode.cpp
     linux/gamemode.h