diff --git a/src/parser.rs b/src/parser.rs
index 6ecf24c3..c5e90bf9 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -109,6 +109,7 @@ impl AST {
     }
 
     /// Get a mutable reference to the statements.
+    #[cfg(not(feature = "no_optimize"))]
     #[inline(always)]
     pub(crate) fn statements_mut(&mut self) -> &mut Vec<Stmt> {
         &mut self.0
diff --git a/tests/operations.rs b/tests/operations.rs
index dae539f0..9ccef6b6 100644
--- a/tests/operations.rs
+++ b/tests/operations.rs
@@ -72,7 +72,7 @@ fn test_max_operations_functions() -> Result<(), Box<EvalAltResult>> {
                     fn inc(x) { x + 1 }
                     let x = 0;
 
-                    while x < 28 {
+                    while x < 30 {
                         print(x);
                         x = inc(x);
                     }