diff --git a/arch/arm/src/efm32/efm32_i2c.c b/arch/arm/src/efm32/efm32_i2c.c
index 59ad3aa2f8..a52cd05ead 100644
--- a/arch/arm/src/efm32/efm32_i2c.c
+++ b/arch/arm/src/efm32/efm32_i2c.c
@@ -553,7 +553,7 @@ static inline int efm32_i2c_sem_waitdone(FAR struct efm32_i2c_priv_s *priv)
 
 #ifdef CONFIG_EFM32_I2C_DYNTIMEO
       abstime.tv_nsec += 1000 * efm32_i2c_tousecs(priv->msgc, priv->msgv);
-      if (abstime.tv_nsec > 1000 * 1000 * 1000)
+      if (abstime.tv_nsec >= 1000 * 1000 * 1000)
         {
           abstime.tv_sec++;
           abstime.tv_nsec -= 1000 * 1000 * 1000;
@@ -561,7 +561,7 @@ static inline int efm32_i2c_sem_waitdone(FAR struct efm32_i2c_priv_s *priv)
 
 #elif CONFIG_EFM32_I2CTIMEOMS > 0
       abstime.tv_nsec += CONFIG_EFM32_I2CTIMEOMS * 1000 * 1000;
-      if (abstime.tv_nsec > 1000 * 1000 * 1000)
+      if (abstime.tv_nsec >= 1000 * 1000 * 1000)
         {
           abstime.tv_sec++;
           abstime.tv_nsec -= 1000 * 1000 * 1000;