diff --git a/engine/src/bitboard/utils.rs b/engine/src/bitboard/utils.rs
index 32d650a..a30e503 100644
--- a/engine/src/bitboard/utils.rs
+++ b/engine/src/bitboard/utils.rs
@@ -1,10 +1,11 @@
-
+#[inline(always)]
 pub fn pop_lsb(value: &mut u64) -> usize {
   let idx = value.trailing_zeros() as usize;
   *value &= !(1 << idx);
   return idx;
 }
 
+#[inline(always)]
 pub fn pop_msb(value: &mut u64) -> usize {
   let idx = 63 - value.leading_zeros() as usize;
   *value &= !(1 << idx);