diff --git a/contrib/kyua/engine/scheduler.cpp b/contrib/kyua/engine/scheduler.cpp
--- a/contrib/kyua/engine/scheduler.cpp
+++ b/contrib/kyua/engine/scheduler.cpp
@@ -1632,7 +1632,10 @@
     if (user_config.is_set("unprivileged_user")) {
         const passwd::user& user =
             user_config.lookup< engine::user_node >("unprivileged_user");
+        // The property is duplicated using both ATF and Kyua naming styles
+        // for better UX.
         props["unprivileged-user"] = user.name;
+        props["unprivileged_user"] = user.name;
     }
 
     return props;
diff --git a/contrib/kyua/engine/scheduler_test.cpp b/contrib/kyua/engine/scheduler_test.cpp
--- a/contrib/kyua/engine/scheduler_test.cpp
+++ b/contrib/kyua/engine/scheduler_test.cpp
@@ -1192,6 +1192,7 @@
 
     config::properties_map exp_props;
     exp_props["unprivileged-user"] = "nobody";
+    exp_props["unprivileged_user"] = "nobody";
     exp_props["var1"] = "value 1";
 
     ATF_REQUIRE_EQ(exp_props,
diff --git a/contrib/kyua/integration/cmd_test_test.sh b/contrib/kyua/integration/cmd_test_test.sh
--- a/contrib/kyua/integration/cmd_test_test.sh
+++ b/contrib/kyua/integration/cmd_test_test.sh
@@ -596,6 +596,48 @@
 }
 
 
+utils_test_case config_unprivileged_user
+config_unprivileged_user_body() {
+    cat >"my-config" <<EOF
+syntax(2)
+unprivileged_user = "nobody"
+EOF
+    cat >Kyuafile <<EOF
+syntax(2)
+atf_test_program{name="config1", test_suite="suite1"}
+EOF
+    utils_cp_helper config config1
+
+    CONFIG_VAR_FILE="$(pwd)/cookie"; export CONFIG_VAR_FILE
+    if [ -f "${CONFIG_VAR_FILE}" ]; then
+        atf_fail "Cookie file already created; test case list may have gotten" \
+            "a bad configuration"
+    fi
+
+    CONFIG_VAR_NAME="unprivileged-user"; export CONFIG_VAR_NAME
+    atf_check -s exit:1 -o ignore -e ignore kyua -c my-config test config1
+    [ -f "${CONFIG_VAR_FILE}" ] || \
+        atf_fail "Cookie file not created; test case list did not get" \
+            "configuration variables"
+    value="$(cat "${CONFIG_VAR_FILE}")"
+    [ "${value}" = "nobody" ] || \
+        atf_fail "Invalid value (${value}) in cookie file; test case list did" \
+            "not get the correct configuration variables"
+
+    rm "${CONFIG_VAR_FILE}"
+
+    CONFIG_VAR_NAME="unprivileged_user"; export CONFIG_VAR_NAME
+    atf_check -s exit:1 -o ignore -e ignore kyua -c my-config test config1
+    [ -f "${CONFIG_VAR_FILE}" ] || \
+        atf_fail "Cookie file not created; test case list did not get" \
+            "configuration variables"
+    value="$(cat "${CONFIG_VAR_FILE}")"
+    [ "${value}" = "nobody" ] || \
+        atf_fail "Invalid value (${value}) in cookie file; test case list did" \
+            "not get the correct configuration variables"
+}
+
+
 utils_test_case store_contents
 store_contents_body() {
     utils_install_stable_test_wrapper
@@ -1042,6 +1084,7 @@
     atf_add_test_case only_load_used_test_programs
 
     atf_add_test_case config_behavior
+    atf_add_test_case config_unprivileged_user
 
     atf_add_test_case store_contents
     atf_add_test_case results_file__ok
diff --git a/contrib/kyua/integration/helpers/config.cpp b/contrib/kyua/integration/helpers/config.cpp
--- a/contrib/kyua/integration/helpers/config.cpp
+++ b/contrib/kyua/integration/helpers/config.cpp
@@ -34,12 +34,16 @@
 ATF_TEST_CASE(get_variable);
 ATF_TEST_CASE_HEAD(get_variable)
 {
+    const char* varname = ::getenv("CONFIG_VAR_NAME");
+    if (varname == NULL) {
+        varname = "the-variable";
+    }
     const char* output = ::getenv("CONFIG_VAR_FILE");
     if (output == NULL) {
-        set_md_var("require.config", "the-variable");
+        set_md_var("require.config", varname);
     } else {
-        if (has_config_var("the-variable")) {
-            atf::utils::create_file(output, get_config_var("the-variable") +
+        if (has_config_var(varname)) {
+            atf::utils::create_file(output, get_config_var(varname) +
                                     std::string("\n"));
         } else {
             atf::utils::create_file(output, "NOT DEFINED\n");