diff --git a/qemu-gtk4/src/console_area.rs b/qemu-gtk4/src/console_area.rs
index c4da6ed..a68fd57 100644
--- a/qemu-gtk4/src/console_area.rs
+++ b/qemu-gtk4/src/console_area.rs
@@ -98,7 +98,7 @@ mod imp {
             widget.make_current();
 
             if let Err(e) = unsafe { self.realize_gl() } {
-                let e = glib::Error::new(AppError::GL, &e.to_string());
+                let e = glib::Error::new(AppError::GL, &e);
                 widget.set_error(Some(&e));
             }
         }
diff --git a/qemu-gtk4/src/gstaudio.rs b/qemu-gtk4/src/gstaudio.rs
index dda17c8..51252ff 100644
--- a/qemu-gtk4/src/gstaudio.rs
+++ b/qemu-gtk4/src/gstaudio.rs
@@ -17,12 +17,10 @@ fn pcminfo_as_caps(info: &PCMInfo) -> String {
         "{}{}{}",
         if info.is_float {
             "F"
+        } else if info.is_signed {
+            "S"
         } else {
-            if info.is_signed {
-                "S"
-            } else {
-                "U"
-            }
+            "U"
         },
         info.bits,
         if info.be { "BE" } else { "LE" }
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index 50ad9cf..4b12c8b 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -15,7 +15,7 @@ fn main() {
 
 fn try_main() -> Result<(), DynError> {
     let task = env::args().nth(1);
-    match task.as_ref().map(|it| it.as_str()) {
+    match task.as_deref() {
         Some("codegen") => codegen()?,
         _ => print_help(),
     }