diff --git a/ctru-rs/examples/file-explorer.rs b/ctru-rs/examples/file-explorer.rs
index 49855ab..5c158ac 100644
--- a/ctru-rs/examples/file-explorer.rs
+++ b/ctru-rs/examples/file-explorer.rs
@@ -165,7 +165,7 @@ impl<'a> FileExplorer<'a> {
     fn get_input_and_run(&mut self, action: impl FnOnce(&mut Self, String)) {
         let mut keyboard = SoftwareKeyboard::default();
 
-        match keyboard.get_string(2048, &self.apt, &self.gfx) {
+        match keyboard.get_string(2048, self.apt, self.gfx) {
             Ok((path, Button::Right)) => {
                 // Clicked "OK".
                 action(self, path);
diff --git a/ctru-rs/src/applets/mii_selector.rs b/ctru-rs/src/applets/mii_selector.rs
index 079168e..43cdbb3 100644
--- a/ctru-rs/src/applets/mii_selector.rs
+++ b/ctru-rs/src/applets/mii_selector.rs
@@ -281,8 +281,7 @@ impl MiiSelector {
     /// # }
     /// ```
     #[doc(alias = "miiSelectorLaunch")]
-    #[allow(unused_variables)]
-    pub fn launch(&mut self, apt: &Apt, gfx: &Gfx) -> Result<Selection, Error> {
+    pub fn launch(&mut self, _apt: &Apt, _gfx: &Gfx) -> Result<Selection, Error> {
         let mut return_val = Box::<ctru_sys::MiiSelectorReturn>::default();
         unsafe { ctru_sys::miiSelectorLaunch(self.config.as_mut(), return_val.as_mut()) }
 
diff --git a/ctru-rs/src/applets/swkbd.rs b/ctru-rs/src/applets/swkbd.rs
index 768d942..c6325e7 100644
--- a/ctru-rs/src/applets/swkbd.rs
+++ b/ctru-rs/src/applets/swkbd.rs
@@ -310,8 +310,7 @@ impl SoftwareKeyboard {
     /// # }
     /// ```
     #[doc(alias = "swkbdInputText")]
-    #[allow(unused_variables)]
-    pub fn write_exact(&mut self, buf: &mut [u8], apt: &Apt, gfx: &Gfx) -> Result<Button, Error> {
+    pub fn write_exact(&mut self, buf: &mut [u8], _apt: &Apt, _gfx: &Gfx) -> Result<Button, Error> {
         unsafe {
             match ctru_sys::swkbdInputText(self.state.as_mut(), buf.as_mut_ptr(), buf.len()) {
                 ctru_sys::SWKBD_BUTTON_NONE => Err(self.state.result.into()),
@@ -407,7 +406,7 @@ impl SoftwareKeyboard {
         where
             F: FnOnce(&str) -> (CallbackResult, Option<CString>),
         {
-            let closure = Box::from_raw(user as *mut Box<F>);
+            let closure: Box<Box<F>> = Box::from_raw(user.cast());
 
             let text = CStr::from_ptr(text);
             let text_slice: &str = text.to_str().unwrap();
@@ -691,7 +690,7 @@ impl ParentalLock {
     #[allow(unused_variables)]
     pub fn launch(&mut self, apt: &Apt, gfx: &Gfx) -> Result<(), Error> {
         unsafe {
-            let mut buf = [0; 10];
+            let mut buf = [0; 0];
             ctru_sys::swkbdInputText(self.state.as_mut(), buf.as_mut_ptr(), 10);
             let e = self.state.result.into();