diff --git a/crypto/x509/x509_set.c b/crypto/x509/x509_set.c
index 6141af0..5f17851 100644
--- a/crypto/x509/x509_set.c
+++ b/crypto/x509/x509_set.c
@@ -125,9 +125,9 @@
         return (0);
     in = x->cert_info->validity->notBefore;
     if (in != tm) {
-        in = M_ASN1_TIME_dup(tm);
+        in = ASN1_STRING_dup(tm);
         if (in != NULL) {
-            M_ASN1_TIME_free(x->cert_info->validity->notBefore);
+            ASN1_TIME_free(x->cert_info->validity->notBefore);
             x->cert_info->validity->notBefore = in;
         }
     }
@@ -168,9 +168,9 @@
         return (0);
     in = x->cert_info->validity->notAfter;
     if (in != tm) {
-        in = M_ASN1_TIME_dup(tm);
+        in = ASN1_STRING_dup(tm);
         if (in != NULL) {
-            M_ASN1_TIME_free(x->cert_info->validity->notAfter);
+            ASN1_TIME_free(x->cert_info->validity->notAfter);
             x->cert_info->validity->notAfter = in;
         }
     }
diff --git a/crypto/x509/x509cset.c b/crypto/x509/x509cset.c
index 04f1f87..f207a25 100644
--- a/crypto/x509/x509cset.c
+++ b/crypto/x509/x509cset.c
@@ -87,9 +87,9 @@
         return (0);
     in = x->crl->lastUpdate;
     if (in != tm) {
-        in = M_ASN1_TIME_dup(tm);
+        in = ASN1_STRING_dup(tm);
         if (in != NULL) {
-            M_ASN1_TIME_free(x->crl->lastUpdate);
+            ASN1_TIME_free(x->crl->lastUpdate);
             x->crl->lastUpdate = in;
         }
     }
@@ -104,9 +104,9 @@
         return (0);
     in = x->crl->nextUpdate;
     if (in != tm) {
-        in = M_ASN1_TIME_dup(tm);
+        in = ASN1_STRING_dup(tm);
         if (in != NULL) {
-            M_ASN1_TIME_free(x->crl->nextUpdate);
+            ASN1_TIME_free(x->crl->nextUpdate);
             x->crl->nextUpdate = in;
         }
     }
@@ -202,9 +202,9 @@
         return (0);
     in = x->revocationDate;
     if (in != tm) {
-        in = M_ASN1_TIME_dup(tm);
+        in = ASN1_STRING_dup(tm);
         if (in != NULL) {
-            M_ASN1_TIME_free(x->revocationDate);
+            ASN1_TIME_free(x->revocationDate);
             x->revocationDate = in;
         }
     }