1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/libcrypto/rand/rand_unix.c b/src/lib/libcrypto/rand/rand_unix.c
index 6c2be5cb96..71b98ec212 100644
--- a/src/lib/libcrypto/rand/rand_unix.c
+++ b/src/lib/libcrypto/rand/rand_unix.c
@@ -232,7 +232,7 @@ int RAND_poll(void)
                                 t.tv_sec = 0;
                                 t.tv_usec = usec;
 
-                                if (FD_SETSIZE > 0 && fd >= FD_SETSIZE)
+                                if (FD_SETSIZE > 0 && (unsigned)fd >= FD_SETSIZE)
                                         {
                                         /* can't use select, so just try to read once anyway */
                                         try_read = 1;