--- a/src/ne_openssl.c
+++ b/src/ne_openssl.c
@@ -35,6 +35,10 @@
 #include <openssl/x509v3.h>
 #include <openssl/rand.h>
 #include <openssl/opensslv.h>
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+#define X509_get0_notBefore X509_get_notBefore
+#define X509_get0_notAfter X509_get_notAfter
+#endif
 
 #ifdef NE_HAVE_TS_SSL
 #include <stdlib.h> /* for abort() */
@@ -226,10 +230,10 @@ void ne_ssl_cert_validity_time(const ne_ssl_certificate *cert,
                                time_t *from, time_t *until)
 {
     if (from) {
-        *from = asn1time_to_timet(X509_get_notBefore(cert->subject));
+        *from = asn1time_to_timet(X509_get0_notBefore(cert->subject));
     }
     if (until) {
-        *until = asn1time_to_timet(X509_get_notAfter(cert->subject));
+        *until = asn1time_to_timet(X509_get0_notAfter(cert->subject));
     }
 }
 
--- a/src/ne_socket.c
+++ b/src/ne_socket.c
@@ -27,7 +27,7 @@
 #include "config.h"
 
 #include <sys/types.h>
-#ifdef HAVE_SYS_UIO_h
+#ifdef HAVE_SYS_UIO_H
 #include <sys/uio.h> /* writev(2) */
 #endif
 #ifdef HAVE_SYS_TIME_H