diff --git a/obexd/plugins/filesystem.c b/obexd/plugins/filesystem.c
index bf00ac2..bb758ab 100644
--- a/obexd/plugins/filesystem.c
+++ b/obexd/plugins/filesystem.c
@@ -474,7 +474,7 @@ static void *pcsuite_open(const char *name, int oflag, mode_t mode,
 	return append_listing(object, name, TRUE, size, err);
 }
 
-int string_free(void *object)
+static int string_free(void *object)
 {
 	GString *string = object;
 
diff --git a/obexd/plugins/filesystem.h b/obexd/plugins/filesystem.h
index 712653f..9c7ad9a 100644
--- a/obexd/plugins/filesystem.h
+++ b/obexd/plugins/filesystem.h
@@ -21,5 +21,4 @@
  *
  */
 
-int string_free(void *object);
 ssize_t string_read(void *object, void *buf, size_t count);