diff --git a/Algorithm explanation.txt b/Algorithm explanation.txt
index a938ad8..8c8e400 100644
--- a/Algorithm explanation.txt	
+++ b/Algorithm explanation.txt	
@@ -267,7 +267,7 @@ We create a pin array. The first index is the square being pinned. The second in
                 const int pinned_square = (DEBRUIJN64[MAGIC * (temp_pin_bitboard ^ (temp_pin_bitboard - 1)) >> 58]); //get the square
                 temp_pin_bitboard &= temp_pin_bitboard - 1; //remove one bit from bitboard
 
-                if (temp_pin_bitboard == 0) //if the bitboard is not empty then that piece was pinned.
+                if (temp_pin_bitboard == 0) //if the bitboard is now empty then that piece was pinned.
                 {
                     pinArray[pinNumber][PINNED_SQUARE_INDEX] = pinned_square; //add the pinned square
                     pinArray[pinNumber][PINNING_PIECE_INDEX] = piece_square; //add the pinning piece