diff --git a/src/main.rs b/src/main.rs
index 1ee5d7c..ebc1e83 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -99,12 +99,14 @@ fn print_system_info(
     {blue}     ▟█▘ ▜█▖    {cyan}▝█▛         {cyan}  {blue}Colors{reset}        {colors}\n\n"
   )?;
 
-  let len = cursor.position() as usize;
+  let len =
+    usize::try_from(cursor.position()).expect("cursor position fits usize");
   // Direct syscall to avoid stdout buffering allocation
   let written = unsafe { syscall::sys_write(1, buf.as_ptr(), len) };
   if written < 0 {
     return Err(io::Error::last_os_error().into());
   }
+  #[allow(clippy::cast_sign_loss)] // non-negative verified by the guard above
   if written as usize != len {
     return Err(
       io::Error::new(io::ErrorKind::WriteZero, "partial write to stdout")
diff --git a/src/system.rs b/src/system.rs
index e75daa8..9dd1ab3 100644
--- a/src/system.rs
+++ b/src/system.rs
@@ -157,12 +157,12 @@ pub fn get_memory_usage() -> Result<String, io::Error> {
     }
 
     #[allow(clippy::cast_precision_loss)]
-    let total_memory_gb = total_memory_kb as f64 / 1024.0 / 1024.0;
+    let total_gb = total_memory_kb as f64 / 1024.0 / 1024.0;
     #[allow(clippy::cast_precision_loss)]
-    let available_memory_gb = available_memory_kb as f64 / 1024.0 / 1024.0;
-    let used_memory_gb = total_memory_gb - available_memory_gb;
+    let available_gb = available_memory_kb as f64 / 1024.0 / 1024.0;
+    let used_memory_gb = total_gb - available_gb;
 
-    Ok((used_memory_gb, total_memory_gb))
+    Ok((used_memory_gb, total_gb))
   }
 
   let (used_memory, total_memory) = parse_memory_info()?;