diff --git a/lib/vauth/digest.c b/lib/vauth/digest.c
index 1983d03c77..12c6f7dd5b 100644
--- a/lib/vauth/digest.c
+++ b/lib/vauth/digest.c
@@ -420,7 +420,7 @@ CURLcode Curl_auth_create_digest_md5_message(struct Curl_easy *data,
     msnprintf(&HA1_hex[2 * i], 3, "%02x", digest[i]);
 
   /* Generate our SPN */
-  spn = Curl_auth_build_spn(service, realm, NULL);
+  spn = Curl_auth_build_spn(service, data->conn->host.name, NULL);
   if(!spn)
     return CURLE_OUT_OF_MEMORY;
 
diff --git a/tests/data/test823 b/tests/data/test823
index b179a1807b..affb6772d6 100644
--- a/tests/data/test823
+++ b/tests/data/test823
@@ -14,7 +14,7 @@ RFC2831
 <servercmd>
 AUTH DIGEST-MD5
 REPLY AUTHENTICATE + cmVhbG09ImN1cmwiLG5vbmNlPSI1MzAwZDE3YTFkNjk1YmQ0MTFlNGNkZjk2Zjk1NDhjMjNjZWQ2MTc1IixhbGdvcml0aG09bWQ1LXNlc3MscW9wPSJhdXRoIg==
-REPLY dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJpbWFwL2N1cmwiLHJlc3BvbnNlPTVlNzk5N2ZhZDZjMzNiZWJmZjk3OWJkY2I4ZmU3MTZiLHFvcD1hdXRo +
+REPLY dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJpbWFwLzEyNy4wLjAuMSIscmVzcG9uc2U9YmU2MzgyNDkzNjJkN2FhMGUzNTM4NTA3Njc1MWFiNDgscW9wPWF1dGg= + cnNwYXV0aD04MWY5MDNlYjQ4MjNhZTkyMmRiNWYwNGNiNThjY2RlYg==
 REPLY  A002 OK AUTHENTICATE completed
 </servercmd>
 <data>
@@ -53,7 +53,7 @@ IMAP DIGEST-MD5 authentication
 <protocol>
 A001 CAPABILITY
 A002 AUTHENTICATE DIGEST-MD5
-dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJpbWFwL2N1cmwiLHJlc3BvbnNlPTVlNzk5N2ZhZDZjMzNiZWJmZjk3OWJkY2I4ZmU3MTZiLHFvcD1hdXRo
+dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJpbWFwLzEyNy4wLjAuMSIscmVzcG9uc2U9YmU2MzgyNDkzNjJkN2FhMGUzNTM4NTA3Njc1MWFiNDgscW9wPWF1dGg=
 
 A003 SELECT %TESTNUMBER
 A004 FETCH 1 BODY[]
diff --git a/tests/data/test869 b/tests/data/test869
index 96d8c837a2..0613e2f513 100644
--- a/tests/data/test869
+++ b/tests/data/test869
@@ -16,7 +16,7 @@ RFC5034
 <servercmd>
 AUTH DIGEST-MD5
 REPLY AUTH + cmVhbG09ImN1cmwiLG5vbmNlPSI1MzAwZDE3YTFkNjk1YmQ0MTFlNGNkZjk2Zjk1NDhjMjNjZWQ2MTc1IixhbGdvcml0aG09bWQ1LXNlc3MscW9wPSJhdXRoIg==
-REPLY dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJwb3AvY3VybCIscmVzcG9uc2U9YzNhMGFiZTc5NDYyNTIyNGY5Njg3YTYzMTc3ZmRhNWIscW9wPWF1dGg= +
+REPLY dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJwb3AvMTI3LjAuMC4xIixyZXNwb25zZT0xODMxNTU0OGM3ZjNhMzdlNzE2ZmE4ZTkwZGZhYjliNixxb3A9YXV0aA== + cnNwYXV0aD1mZWNiMzZiNzA4NmUwYjk1ZDkwNjQ1OWVmYThjYzI5ZQ==
 REPLY  +OK Login successful
 </servercmd>
 <data>
@@ -55,7 +55,7 @@ pop3://%HOSTIP:%POP3PORT/%TESTNUMBER -u user:secret
 <protocol>
 CAPA
 AUTH DIGEST-MD5
-dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJwb3AvY3VybCIscmVzcG9uc2U9YzNhMGFiZTc5NDYyNTIyNGY5Njg3YTYzMTc3ZmRhNWIscW9wPWF1dGg=
+dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJwb3AvMTI3LjAuMC4xIixyZXNwb25zZT0xODMxNTU0OGM3ZjNhMzdlNzE2ZmE4ZTkwZGZhYjliNixxb3A9YXV0aA==
 
 RETR %TESTNUMBER
 QUIT
diff --git a/tests/data/test907 b/tests/data/test907
index b2af26b23d..0ce464c694 100644
--- a/tests/data/test907
+++ b/tests/data/test907
@@ -15,7 +15,7 @@ RFC4954
 <servercmd>
 AUTH DIGEST-MD5
 REPLY AUTH 334 cmVhbG09ImN1cmwiLG5vbmNlPSI1MzAwZDE3YTFkNjk1YmQ0MTFlNGNkZjk2Zjk1NDhjMjNjZWQ2MTc1IixhbGdvcml0aG09bWQ1LXNlc3MscW9wPSJhdXRoIg==
-REPLY dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJzbXRwL2N1cmwiLHJlc3BvbnNlPTk0M2YxNjk1OWYxY2M2ZjA3ZTZmMDk0ZjVkYmQ0NzNlLHFvcD1hdXRo 334
+REPLY dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJzbXRwLzEyNy4wLjAuMSIscmVzcG9uc2U9YTI3YzQzOTVmMzM4Njc0M2JlMTIyMDdiN2QxMTIxYzUscW9wPWF1dGg= 334 cnNwYXV0aD05ZWE4NTljYjlkOTBjMzdjYTMwZDQ5ZDM1Mzc4NjMwYw==
 REPLY  235 Authenticated
 </servercmd>
 </reply>
@@ -48,7 +48,7 @@ smtp://%HOSTIP:%SMTPPORT/%TESTNUMBER --mail-rcpt recipient@example.com --mail-fr
 <protocol>
 EHLO %TESTNUMBER
 AUTH DIGEST-MD5
-dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJzbXRwL2N1cmwiLHJlc3BvbnNlPTk0M2YxNjk1OWYxY2M2ZjA3ZTZmMDk0ZjVkYmQ0NzNlLHFvcD1hdXRo
+dXNlcm5hbWU9InVzZXIiLHJlYWxtPSJjdXJsIixub25jZT0iNTMwMGQxN2ExZDY5NWJkNDExZTRjZGY5NmY5NTQ4YzIzY2VkNjE3NSIsY25vbmNlPSIzNDMzMzIzMTM1MzMzMjMxMzYzMzMyMzEzNzMzMzIzMSIsbmM9IjAwMDAwMDAxIixkaWdlc3QtdXJpPSJzbXRwLzEyNy4wLjAuMSIscmVzcG9uc2U9YTI3YzQzOTVmMzM4Njc0M2JlMTIyMDdiN2QxMTIxYzUscW9wPWF1dGg=
 
 MAIL FROM:<sender@example.com>
 RCPT TO:<recipient@example.com>