diff --git a/arch/arm/src/nrf52/nrf52_tim_lowerhalf.c b/arch/arm/src/nrf52/nrf52_tim_lowerhalf.c
index b57cfc1a42..2f9b349914 100644
--- a/arch/arm/src/nrf52/nrf52_tim_lowerhalf.c
+++ b/arch/arm/src/nrf52/nrf52_tim_lowerhalf.c
@@ -52,7 +52,7 @@
 
 /* Maximum supported timeout */
 
-#define NRF52_TIMER_MAXTIMEOUT (NRF52_TIMER_MAX * 1000000 / NRF52_TIMER_PER)
+#define NRF52_TIMER_MAXTIMEOUT (NRF52_TIMER_MAX * (1000000 / NRF52_TIMER_PER))
 
 /****************************************************************************
  * Private Types
diff --git a/arch/arm/src/nrf53/nrf53_tim_lowerhalf.c b/arch/arm/src/nrf53/nrf53_tim_lowerhalf.c
index c1f896dfc3..f183c95476 100644
--- a/arch/arm/src/nrf53/nrf53_tim_lowerhalf.c
+++ b/arch/arm/src/nrf53/nrf53_tim_lowerhalf.c
@@ -52,7 +52,7 @@
 
 /* Maximum supported timeout */
 
-#define NRF53_TIMER_MAXTIMEOUT (NRF53_TIMER_MAX * 1000000 / NRF53_TIMER_PER)
+#define NRF53_TIMER_MAXTIMEOUT (NRF53_TIMER_MAX * (1000000 / NRF53_TIMER_PER))
 
 /****************************************************************************
  * Private Types
diff --git a/arch/arm/src/nrf91/nrf91_tim_lowerhalf.c b/arch/arm/src/nrf91/nrf91_tim_lowerhalf.c
index d2a9faefe9..2c9941bebd 100644
--- a/arch/arm/src/nrf91/nrf91_tim_lowerhalf.c
+++ b/arch/arm/src/nrf91/nrf91_tim_lowerhalf.c
@@ -52,7 +52,7 @@
 
 /* Maximum supported timeout */
 
-#define NRF91_TIMER_MAXTIMEOUT (NRF91_TIMER_MAX * 1000000 / NRF91_TIMER_PER)
+#define NRF91_TIMER_MAXTIMEOUT (NRF91_TIMER_MAX * (1000000 / NRF91_TIMER_PER))
 
 /****************************************************************************
  * Private Types