diff --git a/src/protocol/parser/pass_symbols.rs b/src/protocol/parser/pass_symbols.rs
index 8d7fa84e4423d53074dfd094c87d3cc0e471a84a..e3ba3fb5e77091381088069aac78dc7ba0f37f7f 100644
--- a/src/protocol/parser/pass_symbols.rs
+++ b/src/protocol/parser/pass_symbols.rs
@@ -80,9 +80,10 @@ impl PassSymbols {
                 self.visit_pragma_range(modules, module_idx, ctx, range_idx_usize)?;
             }
 
-            match next_sibling_idx {
-                Some(idx) => { range_idx = idx; },
-                None => { break; },
+            if next_sibling_idx == NO_SIBLING {
+                break;
+            } else {
+                range_idx = next_sibling_idx;
             }
         }