diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2663b662d..0a3ffcbc0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -305,11 +305,13 @@ if(DEFINED 3DS)
 endif()
 
 include(CheckFunctionExists)
+include(CheckIncludeFiles)
 check_function_exists(strdup HAVE_STRDUP)
 check_function_exists(strndup HAVE_STRNDUP)
 if(NOT DEFINED PSP2)
 	check_function_exists(localtime_r HAVE_LOCALTIME_R)
 endif()
+check_include_files("xlocale.h" HAVE_XLOCALE)
 if(NOT CMAKE_SYSTEM_NAME STREQUAL "Generic")
 	check_function_exists(snprintf_l HAVE_SNPRINTF_L)
 	if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
@@ -367,9 +369,6 @@ endif()
 
 if(HAVE_NEWLOCALE AND HAVE_FREELOCALE AND HAVE_USELOCALE OR APPLE)
 	list(APPEND FUNCTION_DEFINES HAVE_LOCALE)
-	if (HAVE_STRTOF_L)
-		list(APPEND FUNCTION_DEFINES HAVE_STRTOF_L)
-	endif()
 	if (HAVE_SNPRINTF_L)
 		list(APPEND FUNCTION_DEFINES HAVE_SNPRINTF_L)
 	endif()
@@ -379,6 +378,14 @@ if(HAVE_SETLOCALE)
 	list(APPEND FUNCTION_DEFINES HAVE_SETLOCALE)
 endif()
 
+if (HAVE_STRTOF_L)
+	list(APPEND FUNCTION_DEFINES HAVE_STRTOF_L)
+endif()
+
+if(HAVE_XLOCALE)
+	list(APPEND FUNCTION_DEFINES HAVE_XLOCALE)
+endif()
+
 if(HAVE_CHMOD)
 	list(APPEND FUNCTION_DEFINES HAVE_CHMOD)
 endif()
diff --git a/include/mgba-util/formatting.h b/include/mgba-util/formatting.h
index 4395879aa..6eb01ffaf 100644
--- a/include/mgba-util/formatting.h
+++ b/include/mgba-util/formatting.h
@@ -12,8 +12,8 @@ CXX_GUARD_START
 
 #include "locale.h"
 
-#if defined(__APPLE__) || defined(__FreeBSD__)
-#include "xlocale.h"
+#ifdef HAVE_XLOCALE
+#include <xlocale.h>
 #elif !defined(HAVE_LOCALE)
 typedef const char* locale_t;
 #endif