diff --git a/tests/data/test1034 b/tests/data/test1034
index bc8da1bf5b..cf4d1b2408 100644
--- a/tests/data/test1034
+++ b/tests/data/test1034
@@ -26,6 +26,7 @@ none
 IDN
 http
 proxy
+codeset-utf8
 </features>
 <name>
 HTTP over proxy with malformatted IDN host name
diff --git a/tests/data/test1035 b/tests/data/test1035
index baccbd83cd..622bb91dde 100644
--- a/tests/data/test1035
+++ b/tests/data/test1035
@@ -24,6 +24,7 @@ none
 IDN
 http
 proxy
+codeset-utf8
 </features>
 <name>
 HTTP over proxy with too long IDN host name
diff --git a/tests/data/test955 b/tests/data/test955
index 92aad227cc..7585a8abb5 100644
--- a/tests/data/test955
+++ b/tests/data/test955
@@ -21,6 +21,7 @@ smtp
 </server>
 <features>
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP without SMTPUTF8 support - UTF-8 based sender (local part only)
diff --git a/tests/data/test956 b/tests/data/test956
index 7b68ac3236..2211291ea7 100644
--- a/tests/data/test956
+++ b/tests/data/test956
@@ -18,6 +18,7 @@ smtp
 </server>
 <features>
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP without SMTPUTF8 support - UTF-8 based recipient (local part only)
diff --git a/tests/data/test957 b/tests/data/test957
index 46c21ae082..bcb61983a4 100644
--- a/tests/data/test957
+++ b/tests/data/test957
@@ -19,6 +19,7 @@ smtp
 </server>
 <features>
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP VRFY without SMTPUTF8 support - UTF-8 recipient (local part only)
diff --git a/tests/data/test958 b/tests/data/test958
index 088d0b1179..6cb04dcd2e 100644
--- a/tests/data/test958
+++ b/tests/data/test958
@@ -19,6 +19,7 @@ smtp
 </server>
 <features>
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP external VRFY without SMTPUTF8 - UTF-8 recipient (local part only)
diff --git a/tests/data/test959 b/tests/data/test959
index d7c1efc678..e04da87d3e 100644
--- a/tests/data/test959
+++ b/tests/data/test959
@@ -22,6 +22,7 @@ smtp
 <features>
 !IDN
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP without SMTPUTF8 support - UTF-8 based sender (host part only)
diff --git a/tests/data/test960 b/tests/data/test960
index 7da2504105..e8ba21f982 100644
--- a/tests/data/test960
+++ b/tests/data/test960
@@ -19,6 +19,7 @@ smtp
 <features>
 !IDN
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP without SMTPUTF8 support - UTF-8 based recipient (host part only)
diff --git a/tests/data/test961 b/tests/data/test961
index 70dcca453b..18ff9dc044 100644
--- a/tests/data/test961
+++ b/tests/data/test961
@@ -20,6 +20,7 @@ smtp
 <features>
 !IDN
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP external VRFY without SMTPUTF8 - UTF-8 recipient (host part only)
diff --git a/tests/data/test968 b/tests/data/test968
index 864f6f1933..158c6a958d 100644
--- a/tests/data/test968
+++ b/tests/data/test968
@@ -24,6 +24,7 @@ smtp
 <features>
 IDN
 !win32
+codeset-utf8
 </features>
 <name>
 SMTP VRFY with SMTPUTF8 support