diff --git a/tests/data/test856 b/tests/data/test856
index ae089d19148d6385ca480f22c001954eb67dc4d0..0c75045c4246b963a9b2ffd8d668f37d828b3263 100644
--- a/tests/data/test856
+++ b/tests/data/test856
@@ -29,11 +29,12 @@ pop3://%HOSTIP:%POP3PORT/856 -u user:wrong
 #
 # Verify data after the test has been "shot"
 <verify>
+# 67 - CURLE_LOGIN_DENIED
 <errorcode>
 67
 </errorcode>
 #
-# The multi interface considers a broken "DO" request as a prematurely broken
+# The multi interface considers a broken "CONNECT" as a prematurely broken
 # transfer and such a connection will not get a "QUIT"
 <protocol>
 CAPA
diff --git a/tests/data/test913 b/tests/data/test913
index c7d547c30931f999ac017b86fc6e7afb5d4295fc..4b0d2f555e3f4f1e74f9aa017fa7f0b16083a061 100644
--- a/tests/data/test913
+++ b/tests/data/test913
@@ -37,6 +37,7 @@ smtp://%HOSTIP:%SMTPPORT/913 --mail-rcpt recipient@example.com --mail-from sende
 #
 # Verify data after the test has been "shot"
 <verify>
+# 55 - CURLE_SEND_ERROR
 <errorcode>
 55
 </errorcode>
diff --git a/tests/data/test914 b/tests/data/test914
index 16ea47028953e30b4372cadcd85ca193415f780b..d1532c806c695481f99f8e6a18c319251232247f 100644
--- a/tests/data/test914
+++ b/tests/data/test914
@@ -33,6 +33,7 @@ smtp://%HOSTIP:%SMTPPORT/914 --mail-rcpt recipient@example.com --mail-from inval
 #
 # Verify data after the test has been "shot"
 <verify>
+# 55 - CURLE_SEND_ERROR
 <errorcode>
 55
 </errorcode>
diff --git a/tests/data/test916 b/tests/data/test916
index 807bb267f51e567c70d875d28d892a2e3d4a22cb..00211550ad4aaa03275489c361371dc25057b547 100644
--- a/tests/data/test916
+++ b/tests/data/test916
@@ -33,6 +33,7 @@ smtp://%HOSTIP:%SMTPPORT/916 --mail-rcpt invalid --mail-from sender@example.com
 #
 # Verify data after the test has been "shot"
 <verify>
+# 55 - CURLE_SEND_ERROR
 <errorcode>
 55
 </errorcode>
diff --git a/tests/data/test918 b/tests/data/test918
index 6f3a382b41a4b26ae9e17fa4e1e8f024247eb31a..3756edd758a83b80b1f3e6f655f13044f4fcd37f 100644
--- a/tests/data/test918
+++ b/tests/data/test918
@@ -33,9 +33,10 @@ smtp://%HOSTIP:%SMTPPORT/918 --mail-rcpt recipient.one@example.com --mail-rcpt i
 #
 # Verify data after the test has been "shot"
 <verify>
-<errorcode>
-55
-</errorcode>
+# 55 - CURLE_SEND_ERROR
+<errorcode>
+55
+</errorcode>
 <protocol>
 EHLO 918
 MAIL FROM:<sender@example.com>