diff --git a/core/net/mac/phase.h b/core/net/mac/phase.h
index 7ad07f9cf..8025d2c13 100644
--- a/core/net/mac/phase.h
+++ b/core/net/mac/phase.h
@@ -50,7 +50,7 @@
 #if PHASE_CONF_DRIFT_CORRECT
 #define PHASE_DRIFT_CORRECT PHASE_CONF_DRIFT_CORRECT
 #else
-#define PHASE_DRIFT_CORRECT 1
+#define PHASE_DRIFT_CORRECT 0
 #endif
 
 struct phase {