diff --git a/library/x509_crt.c b/library/x509_crt.c
index 3eaf5bc..334b8ef 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -1932,6 +1932,16 @@
             continue;
         }
 
+        if( mbedtls_x509_time_is_past( &trust_ca->valid_to ) )
+        {
+            continue;
+        }
+
+        if( mbedtls_x509_time_is_future( &trust_ca->valid_from ) )
+        {
+            continue;
+        }
+
         if( mbedtls_pk_verify_ext( child->sig_pk, child->sig_opts, &trust_ca->pk,
                            child->sig_md, hash, mbedtls_md_get_size( md_info ),
                            child->sig.p, child->sig.len ) != 0 )
@@ -1967,12 +1977,6 @@
         ((void) ca_crl);
 #endif
 
-        if( mbedtls_x509_time_is_past( &trust_ca->valid_to ) )
-            ca_flags |= MBEDTLS_X509_BADCERT_EXPIRED;
-
-        if( mbedtls_x509_time_is_future( &trust_ca->valid_from ) )
-            ca_flags |= MBEDTLS_X509_BADCERT_FUTURE;
-
         if( NULL != f_vrfy )
         {
             if( ( ret = f_vrfy( p_vrfy, trust_ca, path_cnt + 1,