diff --git a/src/back/msl/writer.rs b/src/back/msl/writer.rs
index 55f72b6302..dd4e93b222 100644
--- a/src/back/msl/writer.rs
+++ b/src/back/msl/writer.rs
@@ -3224,7 +3224,7 @@ fn test_stack_size() {
         let stack_size = addresses.end - addresses.start;
         // check the size (in debug only)
         // last observed macOS value: 20528 (CI)
-        if !(14000..=25000).contains(&stack_size) {
+        if !(11000..=25000).contains(&stack_size) {
             panic!("`put_expression` stack size {} has changed!", stack_size);
         }
     }
@@ -3239,7 +3239,7 @@ fn test_stack_size() {
         let stack_size = addresses.end - addresses.start;
         // check the size (in debug only)
         // last observed macOS value: 19152 (CI)
-        if !(13000..=20000).contains(&stack_size) {
+        if !(11000..=20000).contains(&stack_size) {
             panic!("`put_block` stack size {} has changed!", stack_size);
         }
     }