diff --git a/crypto/rand/randfile.c b/crypto/rand/randfile.c
index a92541371..ce1730bd7 100644
--- a/crypto/rand/randfile.c
+++ b/crypto/rand/randfile.c
@@ -211,7 +211,7 @@ const char *RAND_file_name(char *buf, int size)
 		{
 		if (OPENSSL_issetugid() == 0)
 			s=getenv("HOME");
-		if (s != NULL && (strlen(s)+strlen(RFILE)+2 < size))
+		if (s != NULL && ((int)(strlen(s)+strlen(RFILE)+2) < size))
 			{
 			strcpy(buf,s);
 #ifndef VMS