diff --git a/repos/base-hw/src/core/spec/arm/cortex_a9_global_timer.cc b/repos/base-hw/src/core/spec/arm/cortex_a9_global_timer.cc
index 62b9602991..242b0fe235 100644
--- a/repos/base-hw/src/core/spec/arm/cortex_a9_global_timer.cc
+++ b/repos/base-hw/src/core/spec/arm/cortex_a9_global_timer.cc
@@ -102,7 +102,7 @@ unsigned Timer::interrupt_id() const {
 
 
 time_t Timer::us_to_ticks(time_t const us) const {
-	return (us / 1000) * TICS_PER_MS; }
+	return (us * TICS_PER_MS) / 1000; }
 
 
 time_t Timer::_duration() const {
diff --git a/repos/base-hw/src/core/spec/arm/generic_timer.cc b/repos/base-hw/src/core/spec/arm/generic_timer.cc
index efdc010751..0d702cecd3 100644
--- a/repos/base-hw/src/core/spec/arm/generic_timer.cc
+++ b/repos/base-hw/src/core/spec/arm/generic_timer.cc
@@ -58,7 +58,7 @@ time_t Timer::ticks_to_us(time_t const ticks) const {
 
 
 time_t Timer::us_to_ticks(time_t const us) const {
-	return (us / 1000) * _device.ticks_per_ms; }
+	return (us * _device.ticks_per_ms) / 1000; }
 
 
 time_t Timer::_max_value() const {
diff --git a/repos/base-hw/src/core/spec/arm/imx_epit.cc b/repos/base-hw/src/core/spec/arm/imx_epit.cc
index 5145c265c5..6854f90c94 100644
--- a/repos/base-hw/src/core/spec/arm/imx_epit.cc
+++ b/repos/base-hw/src/core/spec/arm/imx_epit.cc
@@ -84,7 +84,7 @@ time_t Timer::ticks_to_us(time_t const ticks) const {
 
 
 time_t Timer::us_to_ticks(time_t const us) const {
-	return (us / 1000UL) * Board::Timer::TICS_PER_MS; }
+	return (us * Board::Timer::TICS_PER_MS) / 1000; }
 
 
 time_t Timer::_max_value() const {
diff --git a/repos/base-hw/src/core/spec/x86_64/pit.cc b/repos/base-hw/src/core/spec/x86_64/pit.cc
index 60bdb5662d..bb895b9084 100644
--- a/repos/base-hw/src/core/spec/x86_64/pit.cc
+++ b/repos/base-hw/src/core/spec/x86_64/pit.cc
@@ -109,7 +109,7 @@ time_t Timer::ticks_to_us(time_t const ticks) const {
 
 
 time_t Timer::us_to_ticks(time_t const us) const {
-	return (us / 1000) * _device.ticks_per_ms; }
+	return (us * _device.ticks_per_ms) / 1000; }
 
 
 time_t Timer::_max_value() const {