diff --git a/arch/arm/src/stm32l4/stm32l4_oneshot.c b/arch/arm/src/stm32l4/stm32l4_oneshot.c
index f247eaefd7..58e5bd49a2 100644
--- a/arch/arm/src/stm32l4/stm32l4_oneshot.c
+++ b/arch/arm/src/stm32l4/stm32l4_oneshot.c
@@ -313,6 +313,7 @@ int stm32l4_oneshot_start(FAR struct stm32l4_oneshot_s *oneshot,
   period = (usec * (uint64_t)oneshot->frequency) / USEC_PER_SEC;
 
   tmrinfo("usec=%llu period=%08llx\n", usec, period);
+  DEBUGASSERT(period > 0);
   DEBUGASSERT(period <= UINT32_MAX);
 
   /* Set up to receive the callback when the interrupt occurs */