diff --git a/src/logic/future_moves.rs b/src/logic/future_moves.rs
index 35c3f31..96bf4d6 100644
--- a/src/logic/future_moves.rs
+++ b/src/logic/future_moves.rs
@@ -50,9 +50,15 @@ pub struct FutureMoveConfig {
 impl std::fmt::Display for FutureMoveConfig {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "D{} ", self.max_depth)?;
-        write!(f, "MD{} ", self.min_arena_depth)?;
-        write!(f, "K{} ", self.top_k_children)?;
-        write!(f, "UM{} ", self.up_to_minus)?;
+        if !self.do_not_prune {
+            write!(f, "MD{} ", self.min_arena_depth)?;
+            write!(f, "K{} ", self.top_k_children)?;
+            write!(f, "UM{} ", self.up_to_minus)?;
+        } else {
+            write!(f, "MD_ ")?;
+            write!(f, "K_ ")?;
+            write!(f, "UM_ ")?;
+        }
         if self.max_arena_size == usize::MAX {
             write!(f, "SMAX ")?;
         } else {