diff --git a/ablescript/src/variables.rs b/ablescript/src/variables.rs
index 47a3a1d..11e2d6a 100644
--- a/ablescript/src/variables.rs
+++ b/ablescript/src/variables.rs
@@ -209,10 +209,12 @@ impl Value {
             Value::Int(i) => Functio::BfFunctio {
                 instructions: {
                     let instruction_mappings = [b'[', b']', b'+', b'-', b',', b'.', b'<', b'>'];
-                    std::iter::successors(Some(i), |i| Some(i >> 3))
-                        .take_while(|&i| i != 0)
-                        .map(|i| instruction_mappings[(i & 0x07) as usize])
-                        .collect()
+                    std::iter::successors(Some(i as usize), |i| {
+                        Some(i / instruction_mappings.len())
+                    })
+                    .take_while(|&i| i != 0)
+                    .map(|i| instruction_mappings[i % instruction_mappings.len()])
+                    .collect()
                 },
                 tape_len: crate::brian::DEFAULT_TAPE_SIZE_LIMIT,
             },