diff --git a/extra/L-system/models/abop-3/abop-3.factor b/extra/L-system/models/abop-3/abop-3.factor
index 49a63eb074..f594cafcd3 100644
--- a/extra/L-system/models/abop-3/abop-3.factor
+++ b/extra/L-system/models/abop-3/abop-3.factor
@@ -9,6 +9,8 @@ IN: L-system.models.abop-3
 
   L-parser-dialect >>commands
 
+  [ 30 >>angle ] >>turtle-values
+
   "c(12)FA" >>axiom
 
  {