diff --git a/src/sys/include/ubixfs/file.h b/src/sys/include/ubixfs/file.h
index 8addb97..bbd1cf3 100755
--- a/src/sys/include/ubixfs/file.h
+++ b/src/sys/include/ubixfs/file.h
@@ -46,9 +46,9 @@
 
 extern struct fileDescriptorTable fdTable[maxFd];
 
-int fopen(char *file,int mode);
+int fopen(const char *file,int mode);
 int fclose(int fd);
 int feof(int fd);
 int fgetc(int fd);
 
-#endif
\ No newline at end of file
+#endif