diff --git a/dda_queue.h b/dda_queue.h
index 275ca5f..b676fae 100644
--- a/dda_queue.h
+++ b/dda_queue.h
@@ -2,14 +2,9 @@
 #define	_DDA_QUEUE
 
 #include	"dda.h"
+#include	"timer.h"
 
-#if (F_CPU & 0xFF000000) == 0
-	// set timeout to 1 second
-	#define HEATER_WAIT_TIMEOUT (F_CPU << 8)
-#else
-	// set timeout to maximum
-	#define HEATER_WAIT_TIMEOUT 0xFFFFFF00
-#endif
+#define HEATER_WAIT_TIMEOUT 1000 MS
 
 /*
 	variables