diff --git a/arch/arm/src/stm32/stm32_i2c_alt.c b/arch/arm/src/stm32/stm32_i2c_alt.c
index 65f71150cb7..1e0283fcc73 100644
--- a/arch/arm/src/stm32/stm32_i2c_alt.c
+++ b/arch/arm/src/stm32/stm32_i2c_alt.c
@@ -923,7 +923,7 @@ static void stm32_i2c_tracedump(FAR struct stm32_i2c_priv_s *priv)
   syslog(LOG_DEBUG, "Elapsed time: %ld\n",
          (long)(clock_systimer() - priv->start_time));
 
-  for (i = 0; i <= priv->tndx; i++)
+  for (i = 0; i < priv->tndx; i++)
     {
       trace = &priv->trace[i];
       syslog(LOG_DEBUG,