diff --git a/firmware/filesystem/util.c b/firmware/filesystem/util.c
index f4ace01..c172c43 100644
--- a/firmware/filesystem/util.c
+++ b/firmware/filesystem/util.c
@@ -103,7 +103,7 @@ int readFile(char * filename, char * data, int len){
 };
 
 int readTextFile(char * filename, char * data, int len){
-    UINT readbytes;
+    int readbytes;
 
     readbytes=readFile(filename,data,len-1);
     if(len>=0)