diff --git a/include/config.h b/include/config.h
index 8fe23a56..0d433978 100644
--- a/include/config.h
+++ b/include/config.h
@@ -65,7 +65,7 @@
 //#define PERFECT_AI_SUPPORT
 #endif
 #ifdef PERFECT_AI_SUPPORT
-#define MUEHLE_NMM
+#define MADWEASEL_MUEHLE_RULE
 #endif
 #endif
 #endif
diff --git a/src/movegen.cpp b/src/movegen.cpp
index 40c7281d..21ab1eb1 100644
--- a/src/movegen.cpp
+++ b/src/movegen.cpp
@@ -85,7 +85,7 @@ ExtMove *generate<REMOVE>(Position &pos, ExtMove *moveList)
     ExtMove *cur = moveList;
 
     if (pos.is_all_in_mills(them)) {
-#ifndef MUEHLE_NMM
+#ifndef MADWEASEL_MUEHLE_RULE
         for (auto i = EFFECTIVE_SQUARE_NB - 1; i >= 0; i--) {
             s = MoveList<LEGAL>::movePriorityList[i];
             if (pos.get_board()[s] & make_piece(them)) {
diff --git a/src/position.cpp b/src/position.cpp
index 96c8b86f..79b401ee 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -644,7 +644,7 @@ bool Position::put_piece(Square s, bool updateRecord)
 
         currentSquare = s;
 
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
         if (pieceInHandCount[WHITE] == 0 &&
             pieceInHandCount[BLACK] == 0 &&
             is_all_surrounded(~sideToMove, SQ_0, s)) {
@@ -657,7 +657,7 @@ bool Position::put_piece(Square s, bool updateRecord)
         const int n = mills_count(currentSquare);
 
         if (n == 0
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
             || is_all_in_mills(them)
 #endif
             ) {
@@ -693,7 +693,7 @@ bool Position::put_piece(Square s, bool updateRecord)
 
     } else if (phase == Phase::moving) {
 
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
         if (is_all_surrounded(~sideToMove, currentSquare, s)) {
             set_gameover(sideToMove, GameOverReason::loseReasonNoWay);
         }
@@ -701,7 +701,7 @@ bool Position::put_piece(Square s, bool updateRecord)
         if (check_if_game_is_over()) {
             return true;
         }
-#endif // MUEHLE_NMM
+#endif // MADWEASEL_MUEHLE_RULE
 
         // If illegal
         if (pieceOnBoardCount[sideToMove] > rule.flyPieceCount ||
@@ -743,7 +743,7 @@ bool Position::put_piece(Square s, bool updateRecord)
         const int n = mills_count(currentSquare);
 
         if (n == 0
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
             || is_all_in_mills(them)
 #endif
             ) {
@@ -782,7 +782,7 @@ bool Position::remove_piece(Square s, bool updateRecord)
 
     if (!rule.mayRemoveFromMillsAlways &&
         potential_mills_count(s, NOBODY)
-#ifndef MUEHLE_NMM
+#ifndef MADWEASEL_MUEHLE_RULE
         && !is_all_in_mills(~sideToMove)
 #endif
        ) {
@@ -1263,9 +1263,9 @@ void Position::surrounded_pieces_count(Square s, int &ourPieceCount, int &theirP
 }
 
 bool Position::is_all_surrounded(Color c
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
                                  , Square from, Square to
-#endif // MUEHLE_NMM
+#endif // MADWEASEL_MUEHLE_RULE
                                 ) const
 {
     // Full
@@ -1280,10 +1280,10 @@ bool Position::is_all_surrounded(Color c
 
     Bitboard bb = byTypeBB[ALL_PIECES];
 
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
     CLEAR_BIT(bb, from);
     SET_BIT(bb, to);
-#endif // MUEHLE_NMM
+#endif // MADWEASEL_MUEHLE_RULE
 
     for (Square s = SQ_BEGIN; s < SQ_END; ++s) {
         if ((c & color_on(s)) &&
diff --git a/src/position.h b/src/position.h
index eeff374a..1d6e8d73 100644
--- a/src/position.h
+++ b/src/position.h
@@ -133,9 +133,9 @@ public:
 
     void surrounded_pieces_count(Square s, int &ourPieceCount, int &theirPieceCount, int &bannedCount, int &emptyCount);
     bool is_all_surrounded(Color c
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
                            , Square from = SQ_0, Square to = SQ_0
-#endif // MUEHLE_NMM
+#endif // MADWEASEL_MUEHLE_RULE
     ) const;
 
     static void print_board();
diff --git a/src/ui/qt/game.cpp b/src/ui/qt/game.cpp
index 6f6b35df..aef8463d 100644
--- a/src/ui/qt/game.cpp
+++ b/src/ui/qt/game.cpp
@@ -1103,9 +1103,9 @@ bool Game::command(const string &cmd, bool update /* = true */)
         gameStart();
     }
 
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
     if (position.get_phase() != Phase::gameOver) {
-#endif // MUEHLE_NMM
+#endif // MADWEASEL_MUEHLE_RULE
         loggerDebug("Computer: %s\n\n", cmd.c_str());
 
         moveHistory.emplace_back(cmd);
@@ -1118,9 +1118,9 @@ bool Game::command(const string &cmd, bool update /* = true */)
 
         if (!position.command(cmd.c_str()))
             return false;
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
     }
-#endif // MUEHLE_NMM
+#endif // MADWEASEL_MUEHLE_RULE
 
     sideToMove = position.side_to_move();
 
@@ -1662,7 +1662,7 @@ void Game::setTips()
         case GameOverReason::loseReasonlessThanThree:
             break;
         case GameOverReason::loseReasonNoWay:
-#ifdef MUEHLE_NMM
+#ifdef MADWEASEL_MUEHLE_RULE
             if (!isInverted) {
                 turnStr = char_to_string(color_to_char(~p.sideToMove));
             } else {