1 files changed, 1 insertions, 1 deletions
diff --git a/socket.c b/socket.c
index b953f3f3..e807ad77 100644
--- a/socket.c
+++ b/socket.c
@@ -752,7 +752,7 @@ static int SSL_verify_callback( int ok_return, X509_STORE_CTX *ctx, int strict )
 		case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
 			X509_NAME_oneline(issuer, buf, sizeof(buf));
 			buf[sizeof(buf) - 1] = '\0';
-			report(stderr, GT_("unknown issuer (first %d characters): %s\n"), sizeof(buf)-1, buf);
+			report(stderr, GT_("unknown issuer (first %d characters): %s\n"), (int)(sizeof(buf)-1), buf);
 			break;
 		}
 	}