diff --git a/zbus_xmlgen/src/lib.rs b/zbus_xmlgen/src/lib.rs
index 025a8d252..5d21ac54b 100644
--- a/zbus_xmlgen/src/lib.rs
+++ b/zbus_xmlgen/src/lib.rs
@@ -241,7 +241,7 @@ fn to_rust_type(ty: &CompleteType, input: bool, as_ref: bool) -> String {
                 } else if vec.len() > 1 {
                     format!("{}({})", if as_ref { "&" } else { "" }, vec.join(", "))
                 } else {
-                    vec[0].to_string()
+                    format!("{}({},)", if as_ref { "&" } else { "" }, vec[0])
                 }
             }
             _ => unimplemented!(),
diff --git a/zbus_xmlgen/tests/data/sample_object0.rs b/zbus_xmlgen/tests/data/sample_object0.rs
index 03b357f88..6b13a2c58 100644
--- a/zbus_xmlgen/tests/data/sample_object0.rs
+++ b/zbus_xmlgen/tests/data/sample_object0.rs
@@ -4,6 +4,9 @@ trait SampleInterface0 {
     /// BarplexSig method
     fn barplex_sig(&self, rule: &(&[i32], i32, std::collections::HashMap<&str, &str>, i32, &[i32], i32, &[&str], i32, bool)) -> zbus::Result<Vec<(String, zbus::zvariant::OwnedObjectPath)>>;
 
+    /// Bazic method
+    fn bazic(&self, bar: &(i32, i32), foo: &(i32,)) -> zbus::Result<((i32, i32), Vec<(i32,)>)>;
+
     /// Bazify method
     fn bazify(&self, bar: &(i32, i32, u32)) -> zbus::Result<zbus::zvariant::OwnedValue>;
 
diff --git a/zbus_xmlgen/tests/data/sample_object0.xml b/zbus_xmlgen/tests/data/sample_object0.xml
index 6f2e4dcf6..cffa98fc3 100644
--- a/zbus_xmlgen/tests/data/sample_object0.xml
+++ b/zbus_xmlgen/tests/data/sample_object0.xml
@@ -9,6 +9,12 @@
        <arg name="bar" type="s" direction="out"/>
        <arg name="baz" type="a{us}" direction="out"/>
        <annotation name="org.freedesktop.DBus.Deprecated" value="true"/>
+     </method>
+      <method name="Bazic">
+       <arg name="bar" type="(ii)" direction="in"/>
+       <arg name="foo" type="(i)" direction="in"/>
+       <arg name="baz" type="(ii)" direction="out"/>
+       <arg name="foz" type="a(i)" direction="out"/>
      </method>
      <method name="Bazify">
        <arg name="bar" type="(iiu)" direction="in"/>