1 files changed, 1 insertions, 1 deletions
diff --git a/src/math/cos.c b/src/math/cos.c
index 0690b6ee..d10629a3 100644
--- a/src/math/cos.c
+++ b/src/math/cos.c
@@ -1,6 +1,6 @@
 # define TGSOURCE "cos.c"
 #include <math.h>
-#include "nonstd/tgmath.h"
+#include "_tgmath.h"
 #include "errno.h"
 
 /** cosine **/