diff --git a/boards/pca10000/include/periph_conf.h b/boards/pca10000/include/periph_conf.h
index e2868aa10f..3c18debc8c 100644
--- a/boards/pca10000/include/periph_conf.h
+++ b/boards/pca10000/include/periph_conf.h
@@ -38,8 +38,8 @@ extern "C" {
 /* Timer 0 configuration */
 #define TIMER_0_DEV         NRF_TIMER0
 #define TIMER_0_CHANNELS    3
-#define TIMER_0_MAX_VALUE   (0xffffffff)
-#define TIMER_0_BITMODE     TIMER_BITMODE_BITMODE_32Bit
+#define TIMER_0_MAX_VALUE   (0xffffff)
+#define TIMER_0_BITMODE     TIMER_BITMODE_BITMODE_24Bit
 #define TIMER_0_ISR         isr_timer0
 #define TIMER_0_IRQ         TIMER0_IRQn
 
diff --git a/boards/pca10005/include/periph_conf.h b/boards/pca10005/include/periph_conf.h
index bfe53b7b43..4d145bb3dc 100644
--- a/boards/pca10005/include/periph_conf.h
+++ b/boards/pca10005/include/periph_conf.h
@@ -38,8 +38,8 @@ extern "C" {
 /* Timer 0 configuration */
 #define TIMER_0_DEV         NRF_TIMER0
 #define TIMER_0_CHANNELS    3
-#define TIMER_0_MAX_VALUE   (0xffffffff)
-#define TIMER_0_BITMODE     TIMER_BITMODE_BITMODE_32Bit
+#define TIMER_0_MAX_VALUE   (0xffffff)
+#define TIMER_0_BITMODE     TIMER_BITMODE_BITMODE_24Bit
 #define TIMER_0_ISR         isr_timer0
 #define TIMER_0_IRQ         TIMER0_IRQn
 
diff --git a/boards/yunjia-nrf51822/include/periph_conf.h b/boards/yunjia-nrf51822/include/periph_conf.h
index 259d8fadf3..38a5a4a38c 100644
--- a/boards/yunjia-nrf51822/include/periph_conf.h
+++ b/boards/yunjia-nrf51822/include/periph_conf.h
@@ -36,8 +36,8 @@ extern "C" {
 /* Timer 0 configuration */
 #define TIMER_0_DEV         NRF_TIMER0
 #define TIMER_0_CHANNELS    3
-#define TIMER_0_MAX_VALUE   (0xffffffff)
-#define TIMER_0_BITMODE     TIMER_BITMODE_BITMODE_32Bit
+#define TIMER_0_MAX_VALUE   (0xffffff)
+#define TIMER_0_BITMODE     TIMER_BITMODE_BITMODE_24Bit     /* only possible value for TIMER0 */
 #define TIMER_0_ISR         isr_timer0
 #define TIMER_0_IRQ         TIMER0_IRQn