diff --git a/src/cmake_config.h.in b/src/cmake_config.h.in
index 2185600af..a8eb53edd 100644
--- a/src/cmake_config.h.in
+++ b/src/cmake_config.h.in
@@ -40,3 +40,4 @@
 #cmakedefine01 CURSES_HAVE_NCURSESW_CURSES_H
 #cmakedefine01 BUILD_UNITTESTS
 #cmakedefine01 BUILD_BENCHMARKS
+#cmakedefine01 USE_SDL2
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index 1bb4dbe97..13b323960 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -539,8 +539,8 @@ void set_default_settings()
 	settings->setDefault("display_density_factor", "1");
 	settings->setDefault("dpi_change_notifier", "0");
 
-	// Altered settings for macOS
-#if defined(__MACH__) && defined(__APPLE__)
+	// Altered settings for CIrrDeviceOSX
+#if !USE_SDL2 && defined(__MACH__) && defined(__APPLE__)
 	settings->setDefault("keymap_sneak", "KEY_SHIFT");
 #endif