diff --git a/cpu/cc253x/sfr-bits.h b/cpu/cc253x/sfr-bits.h
index a3a48be95..efec53958 100644
--- a/cpu/cc253x/sfr-bits.h
+++ b/cpu/cc253x/sfr-bits.h
@@ -93,7 +93,7 @@
 #define WDCTL_CLR2  0x40
 #define WDCTL_CLR1  0x20
 #define WDCTL_CLR0  0x10
-#define WDCTL_MODE1 0x04
+#define WDCTL_MODE1 0x08
 #define WDCTL_MODE0 0x04
 #define WDCTL_INT1  0x02
 #define WDCTL_INT0  0x01