1 files changed, 1 insertions, 1 deletions

diff --git a/map.c b/map.c
index 23f6fe9..76b0518 100644
--- a/map.c
+++ b/map.c
@@ -15,7 +15,7 @@
 #include <assert.h>
 #include <ctype.h>
 #include <limits.h>
-#include <math.h>
+#include <tgmath.h>
 
 #include "puzzles.h"