diff --git a/crates/revm/src/inspector/gas.rs b/crates/revm/src/inspector/gas.rs
index 67e67ef8eb..d22ae0451e 100644
--- a/crates/revm/src/inspector/gas.rs
+++ b/crates/revm/src/inspector/gas.rs
@@ -40,8 +40,9 @@ impl<DB: Database> Inspector<DB> for GasInspector {
         interp: &mut crate::interpreter::Interpreter,
         _context: &mut EvmContext<DB>,
     ) {
-        let last_gas = core::mem::replace(&mut self.gas_remaining, interp.gas.remaining());
-        self.last_gas_cost = last_gas.saturating_sub(self.last_gas_cost);
+        let last_gas_remaining =
+            core::mem::replace(&mut self.gas_remaining, interp.gas.remaining());
+        self.last_gas_cost = last_gas_remaining.saturating_sub(self.gas_remaining);
     }
 
     fn call_end(