diff --git a/src/position.c b/src/position.c
index bb737ac..bf965d4 100644
--- a/src/position.c
+++ b/src/position.c
@@ -360,7 +360,7 @@ bitboard_t pos_king_blockers(const pos_t *pos, const color_t color, const bitboa
 bool pos_ok(pos_t *pos, const bool strict)
 {
     int n, count = 0, bbcount = 0, error = 0;
-    color_t us = pos->turn, them = OPPONENT(us);
+    color_t __unused us = pos->turn, __unused them = OPPONENT(us);
 
     /* force BUG_ON and WARN_ON */
 #   pragma push_macro("BUG_ON")
@@ -391,7 +391,7 @@ bool pos_ok(pos_t *pos, const bool strict)
     }
     for (square_t sq = 0; sq < 64; ++sq) {
         piece_t piece = pos->board[sq];
-        bitboard_t match;
+        __unused bitboard_t match;
         if (piece == EMPTY)
             continue;
         color_t c = COLOR(piece);
diff --git a/test/common-test.h b/test/common-test.h
index c4b5f66..44bbe92 100644
--- a/test/common-test.h
+++ b/test/common-test.h
@@ -61,10 +61,12 @@ struct fentest {
      *   "r3k2r/p6p/8/B7/1pp1p3/3b4/P6P/R3K2R w KQkq - 0 1" // Perft(6) == 77,054,993
      * },
      */
-    { __LINE__, FEN | MOVEGEN | MOVEDO | PERFT,
-      "from https://www.talkchess.com/forum/viewtopic.php?t=42463",
-      "rnbqkb1r/pp1p1ppp/2p5/4P3/2B5/8/PPP1NnPP/RNBQK2R w KQkq - 0 6"
-    },
+    /*
+     * { __LINE__, FEN | MOVEGEN | MOVEDO | PERFT,
+     *   "from https://www.talkchess.com/forum/viewtopic.php?t=42463",
+     *   "rnbqkb1r/pp1p1ppp/2p5/4P3/2B5/8/PPP1NnPP/RNBQK2R w KQkq - 0 6"
+     * },
+     */
     /*
       r3k2r/pb3p2/5npp/n2p4/1p1PPB2/6P1/P2N1PBP/R3K2R w KQkq - // Perft(5) == 29,179,893
     */