diff -dur -x '*~' libs3-20181010.orig/src/request.c libs3-20181010/src/request.c
--- libs3-20181010.orig/src/request.c	2016-12-14 19:17:36.000000000 +0100
+++ libs3-20181010/src/request.c	2019-03-04 13:10:25.000000000 +0100
@@ -1701,11 +1701,6 @@
         return S3StatusConnectionFailed;
     case CURLE_PARTIAL_FILE:
         return S3StatusOK;
-#if LIBCURL_VERSION_NUM >= 0x071101 /* 7.17.1 */
-    case CURLE_PEER_FAILED_VERIFICATION:
-#else
-    case CURLE_SSL_PEER_CERTIFICATE:
-#endif
     case CURLE_SSL_CACERT:
         return S3StatusServerFailedVerification;
     default: