diff --git a/cpu/sam0_common/periph/eth.c b/cpu/sam0_common/periph/eth.c
index 46cd5dd607..106908f2be 100644
--- a/cpu/sam0_common/periph/eth.c
+++ b/cpu/sam0_common/periph/eth.c
@@ -27,7 +27,7 @@
 
 #include "sam0_eth_netdev.h"
 
-#define ENABLE_DEBUG (0)
+#define ENABLE_DEBUG 0
 #include "debug.h"
 #include "log.h"
 
diff --git a/cpu/sam0_common/sam0_eth/eth-netdev.c b/cpu/sam0_common/sam0_eth/eth-netdev.c
index 6592478f33..a84db83996 100644
--- a/cpu/sam0_common/sam0_eth/eth-netdev.c
+++ b/cpu/sam0_common/sam0_eth/eth-netdev.c
@@ -30,7 +30,7 @@
 
 #include "sam0_eth_netdev.h"
 
-#define ENABLE_DEBUG (0)
+#define ENABLE_DEBUG 0
 #include "debug.h"
 #include "log.h"