diff --git a/src/apr.rs b/src/apr.rs
index 0209474..d10dc93 100644
--- a/src/apr.rs
+++ b/src/apr.rs
@@ -57,7 +57,7 @@ impl Apr {
                 "/pawn.png",
                 i,
                 1,
-                behaviours.iter().len() as u8,
+                behaviours.len() as u8,
             ));
             behaviours.push(behaviour::Behaviour::new(
                 vec![(1, 1)],
@@ -71,7 +71,7 @@ impl Apr {
                 "/pawn.png",
                 i,
                 0,
-                behaviours.iter().len() as u8,
+                behaviours.len() as u8,
             ));
             behaviours.push(behaviour::Behaviour::new(
                 vec![(1, 2)],
@@ -85,7 +85,7 @@ impl Apr {
                 "/pawn2.png",
                 i,
                 c - 2,
-                behaviours.iter().len() as u8,
+                behaviours.len() as u8,
             ));
             behaviours.push(behaviour::Behaviour::new(
                 vec![(1, 1)],
@@ -99,7 +99,7 @@ impl Apr {
                 "/pawn2.png",
                 i,
                 c - 1,
-                behaviours.iter().len() as u8,
+                behaviours.len() as u8,
             ));
             behaviours.push(behaviour::Behaviour::new(
                 vec![(1, 2)],