diff --git a/apps/httpserver_raw/fs.c b/apps/httpserver_raw/fs.c
index 5d4fcc0..9c4fa45 100644
--- a/apps/httpserver_raw/fs.c
+++ b/apps/httpserver_raw/fs.c
@@ -33,9 +33,20 @@
 #include "lwip/def.h"
 #include "fs.h"
 #include "fsdata.h"
-#include "fsdata.c"
 #include <string.h>
 
+/** Set this to 1 to include "fsdata_custom.c" instead of "fsdata.c" for the
+ * file system (to prevent changing the file included in CVS) */
+#ifndef HTTPD_USE_CUSTUM_FSDATA
+#define HTTPD_USE_CUSTUM_FSDATA 0
+#endif
+
+#if HTTPD_USE_CUSTUM_FSDATA
+#include "fsdata_custom.c"
+#else /* HTTPD_USE_CUSTUM_FSDATA */
+#include "fsdata.c"
+#endif /* HTTPD_USE_CUSTUM_FSDATA */
+
 /*-----------------------------------------------------------------------------------*/
 /* Define the number of open files that we can support. */
 #ifndef LWIP_MAX_OPEN_FILES