diff --git a/include/qemu-common.h b/include/qemu-common.h
index bbaffd12e7248903a39d441af6c4124b27460580..f3288216504f635ccf838468c7310ff41ce79944 100644
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -199,7 +199,6 @@ int qemu_strnlen(const char *s, int max_len);
  */
 char *qemu_strsep(char **input, const char *delim);
 time_t mktimegm(struct tm *tm);
-int qemu_fls(int i);
 int qemu_fdatasync(int fd);
 int fcntl_setfl(int fd, int flag);
 int qemu_parse_fd(const char *param);
diff --git a/util/cutils.c b/util/cutils.c
index 5d1c9ebe051025a611cc189a47347c9481c10f79..43aafde8a59a8a2d9a84bfba7816d9413b62a711 100644
--- a/util/cutils.c
+++ b/util/cutils.c
@@ -145,11 +145,6 @@ time_t mktimegm(struct tm *tm)
     return t;
 }
 
-int qemu_fls(int i)
-{
-    return 32 - clz32(i);
-}
-
 /*
  * Make sure data goes on disk, but if possible do not bother to
  * write out the inode just for timestamp updates.