diff --git a/src/elements/ttan.c b/src/elements/ttan.c
index d0ff4ceed..0fa735a78 100644
--- a/src/elements/ttan.c
+++ b/src/elements/ttan.c
@@ -17,7 +17,7 @@
 
 int update_TTAN(UPDATE_FUNC_ARGS) {
 	int nx, ny, ttan = 0;
-	if(nt<8)
+	if(nt<=6)
 	{
 		for (nx=-1; nx<2; nx++)
 			for (ny=-1; ny<2; ny++) {