diff --git a/src/openrct2/platform/linux.c b/src/openrct2/platform/linux.c
index 1fc785099f..4a3be91bc9 100644
--- a/src/openrct2/platform/linux.c
+++ b/src/openrct2/platform/linux.c
@@ -34,7 +34,6 @@
 #include <locale.h>
 
 #include "../config/Config.h"
-#include "../localisation/date.h"
 #include "../localisation/language.h"
 #include "../localisation/string_ids.h"
 #include "../util/util.h"
@@ -256,12 +255,6 @@ uint8 platform_get_locale_measurement_format(){
 	return MEASUREMENT_FORMAT_METRIC;
 }
 
-uint8 platform_get_locale_date_format()
-{
-	// TODO Stub implementation
-	return DATE_FORMAT_DAY_MONTH_YEAR;
-}
-
 static void execute_cmd(char *command, sint32 *exit_value, char *buf, size_t *buf_size) {
 	FILE *f;
 	size_t n_chars;
diff --git a/src/openrct2/platform/macos.m b/src/openrct2/platform/macos.m
index 8bf8ecf0b9..b70fbf2bce 100644
--- a/src/openrct2/platform/macos.m
+++ b/src/openrct2/platform/macos.m
@@ -21,7 +21,6 @@
 #include <mach-o/dyld.h>
 #include "platform.h"
 #include "../util/util.h"
-#include "../localisation/date.h"
 #include "../localisation/language.h"
 #include "../config/Config.h"
 
@@ -280,12 +279,6 @@ uint8 platform_get_locale_measurement_format()
 	}
 }
 
-uint8 platform_get_locale_date_format()
-{
-	// TODO Stub implementation
-	return DATE_FORMAT_DAY_MONTH_YEAR;
-}
-
 sint32 platform_get_non_window_flags()
 {
 	return SDL_WINDOW_MINIMIZED | SDL_WINDOW_FULLSCREEN | SDL_WINDOW_FULLSCREEN_DESKTOP;