diff --git a/src/openrct2/platform/platform.h b/src/openrct2/platform/platform.h
index ac93a317c5..62f076a89b 100644
--- a/src/openrct2/platform/platform.h
+++ b/src/openrct2/platform/platform.h
@@ -167,6 +167,7 @@ bool platform_original_game_data_exists(const utf8 *path);
 time_t platform_file_get_modified_time(const utf8* path);
 bool platform_ensure_directory_exists(const utf8 *path);
 bool platform_directory_delete(const utf8 *path);
+char* platform_get_absolute_path(const char* relative_path,const char* base_path);
 bool platform_lock_single_instance();
 sint32 platform_enumerate_files_begin(const utf8 *pattern);
 bool platform_enumerate_files_next(sint32 handle, file_info *outFileInfo);
diff --git a/src/openrct2/platform/posix.c b/src/openrct2/platform/posix.c
index 3891930217..c39d32ae0b 100644
--- a/src/openrct2/platform/posix.c
+++ b/src/openrct2/platform/posix.c
@@ -262,6 +262,19 @@ bool platform_directory_delete(const utf8 *path)
 	return true;
 }
 
+char* platform_get_absolute_path(const char* relative_path,const char* base_path)
+{
+char path[MAX_PATH];
+
+//This is to get around the fact that dirname() doesn't take a const char*
+char base_path_copy[MAX_PATH];
+safe_strcpy(base_path_copy,base_path,MAX_PATH);
+
+snprintf(path,MAX_PATH,"%s/%s",dirname(base_path_copy),relative_path);
+return realpath(path,NULL);
+}
+
+
 bool platform_lock_single_instance()
 {
 	char pidFilePath[MAX_PATH];