diff --git a/crypto/des/cfb64ede.c b/crypto/des/cfb64ede.c
index 5a54c11026..453b078d30 100644
--- a/crypto/des/cfb64ede.c
+++ b/crypto/des/cfb64ede.c
@@ -151,8 +151,8 @@ void DES_ede3_cfb_encrypt(const unsigned char *in,unsigned char *out,
 			  DES_cblock *ivec,int enc)
 	{
 	register DES_LONG d0,d1,v0,v1;
-	register unsigned long l=length;
-	register int num=numbits,n=(numbits+7)/8,i;
+	register unsigned long l=length,n=((unsigned int)numbits+7)/8;
+	register int num=numbits,i;
 	DES_LONG ti[2];
 	unsigned char *iv;
 	unsigned char ovec[16];