diff --git a/boards/chronos/include/periph_conf.h b/boards/chronos/include/periph_conf.h
index 4590bf63b6c5014af6677f5eb56533a3231888e8..3d94c15d1939296bbb33e17077861464e8f97115 100644
--- a/boards/chronos/include/periph_conf.h
+++ b/boards/chronos/include/periph_conf.h
@@ -39,7 +39,8 @@ extern "C" {
  * @brief   Timer configuration
  * @{
  */
-#define TIMER_DEV           (TIMER_A0)
+#define TIMER_NUMOF         (1U)
+#define TIMER_BASE          (TIMER_A0)
 #define TIMER_CHAN          (5)
 #define TIMER_ISR_CC0       (TIMER0_A0_VECTOR)
 #define TIMER_ISR_CCX       (TIMER0_A1_VECTOR)
diff --git a/boards/msb-430/include/periph_conf.h b/boards/msb-430/include/periph_conf.h
index 695cbc40db9ba0718a926e39360c98354b5c5202..8a94496653c92ac5ae92151888257d970a53c43d 100644
--- a/boards/msb-430/include/periph_conf.h
+++ b/boards/msb-430/include/periph_conf.h
@@ -39,7 +39,8 @@ extern "C" {
  * @brief   Timer configuration
  * @{
  */
-#define TIMER_DEV           (TIMER_A)
+#define TIMER_NUMOF         (1U)
+#define TIMER_BASE          (TIMER_A)
 #define TIMER_CHAN          (3)
 #define TIMER_ISR_CC0       (TIMERA0_VECTOR)
 #define TIMER_ISR_CCX       (TIMERA1_VECTOR)
diff --git a/boards/msb-430h/include/periph_conf.h b/boards/msb-430h/include/periph_conf.h
index 7ea7c4d2d2f7c88ec4f8e9c38a0069de33d198d5..c323138611021693777dd3208d6bb76242db7eec 100644
--- a/boards/msb-430h/include/periph_conf.h
+++ b/boards/msb-430h/include/periph_conf.h
@@ -41,7 +41,8 @@ extern "C" {
  * @brief   Timer configuration
  * @{
  */
-#define TIMER_DEV           (TIMER_A)
+#define TIMER_NUMOF         (1U)
+#define TIMER_BASE          (TIMER_A)
 #define TIMER_CHAN          (3)
 #define TIMER_ISR_CC0       (TIMERA0_VECTOR)
 #define TIMER_ISR_CCX       (TIMERA1_VECTOR)
diff --git a/boards/telosb/include/periph_conf.h b/boards/telosb/include/periph_conf.h
index c1ad58a053eb1345c01260019b29afd17370fb8d..383daef3ca4792586079cd29eed943844587ec16 100644
--- a/boards/telosb/include/periph_conf.h
+++ b/boards/telosb/include/periph_conf.h
@@ -39,7 +39,8 @@ extern "C" {
  * @brief   Timer configuration
  * @{
  */
-#define TIMER_DEV           (TIMER_A)
+#define TIMER_NUMOF         (1U)
+#define TIMER_BASE          (TIMER_A)
 #define TIMER_CHAN          (3)
 #define TIMER_ISR_CC0       (TIMERA0_VECTOR)
 #define TIMER_ISR_CCX       (TIMERA1_VECTOR)
diff --git a/boards/wsn430-common/include/periph_conf.h b/boards/wsn430-common/include/periph_conf.h
index 0ab7a6a720d9b57529c0951aa1efa0f46d9b879b..c08015f6861fc41e344079b2f2c6d4c6ce358789 100644
--- a/boards/wsn430-common/include/periph_conf.h
+++ b/boards/wsn430-common/include/periph_conf.h
@@ -39,7 +39,8 @@ extern "C" {
  * @brief   Timer configuration
  * @{
  */
-#define TIMER_DEV           (TIMER_A)
+#define TIMER_NUMOF         (1U)
+#define TIMER_BASE          (TIMER_A)
 #define TIMER_CHAN          (3)
 #define TIMER_ISR_CC0       (TIMERA0_VECTOR)
 #define TIMER_ISR_CCX       (TIMERA1_VECTOR)
diff --git a/boards/z1/include/periph_conf.h b/boards/z1/include/periph_conf.h
index 1ef7ee6f1a5ff02968f00c0aeaf1d8284df45de5..4b9c85c4dfca78e57ed6fda367d290c92e8410b9 100644
--- a/boards/z1/include/periph_conf.h
+++ b/boards/z1/include/periph_conf.h
@@ -39,7 +39,8 @@ extern "C" {
  * @brief   Timer configuration
  * @{
  */
-#define TIMER_DEV           (TIMER_A)
+#define TIMER_NUMOF         (1U)
+#define TIMER_BASE          (TIMER_A)
 #define TIMER_CHAN          (3)
 #define TIMER_ISR_CC0       (TIMERA0_VECTOR)
 #define TIMER_ISR_CCX       (TIMERA1_VECTOR)