diff --git a/lib/singlepass-backend/src/machine.rs b/lib/singlepass-backend/src/machine.rs
index bd2e43fc0..54919dade 100644
--- a/lib/singlepass-backend/src/machine.rs
+++ b/lib/singlepass-backend/src/machine.rs
@@ -257,6 +257,7 @@ impl Machine {
 
     pub fn release_locations_keep_state<E: Emitter>(&self, assembler: &mut E, locs: &[Location]) {
         let mut delta_stack_offset: usize = 0;
+        let mut stack_offset = self.stack_offset.0;
 
         for loc in locs.iter().rev() {
             match *loc {
@@ -265,9 +266,10 @@ impl Machine {
                         unreachable!();
                     }
                     let offset = (-x) as usize;
-                    if offset != self.stack_offset.0 {
+                    if offset != stack_offset {
                         unreachable!();
                     }
+                    stack_offset -= 8;
                     delta_stack_offset += 8;
                 }
                 _ => {}