diff --git a/sdk/core/azure-core/inc/azure/core/datetime.hpp b/sdk/core/azure-core/inc/azure/core/datetime.hpp
index 52b35e208..146633324 100644
--- a/sdk/core/azure-core/inc/azure/core/datetime.hpp
+++ b/sdk/core/azure-core/inc/azure/core/datetime.hpp
@@ -96,7 +96,7 @@ namespace Azure { namespace Core {
      * @param fractionFormat The format for the fraction part of the Datetime. Only supported by
      * RFC 3339.
      *
-     * @throw std::length_error If year exceeds 9999, or if \p format is not recognized.
+     * @throw std::invalid_argument If year exceeds 9999, or if \p format is not recognized.
      */
     std::string GetString(DateFormat format, TimeFractionFormat fractionFormat) const;
 
@@ -106,7 +106,7 @@ namespace Azure { namespace Core {
      *
      * @param format The representation format to use.
      *
-     * @throw std::length_error If year exceeds 9999, or if \p format is not recognized.
+     * @throw std::invalid_argument If year exceeds 9999, or if \p format is not recognized.
      */
     std::string GetString(DateFormat format) const
     {
@@ -118,8 +118,7 @@ namespace Azure { namespace Core {
      *
      * @param fractionFormat The format that is applied to the fraction part from the RFC 3339 date.
      *
-     * @throw std::length_error If year exceeds 9999.
-     * @throw std::invalid_argument If \p format is not recognized.
+     * @throw std::invalid_argument If year exceeds 9999, or if \p format is not recognized.
      */
     std::string GetRfc3339String(TimeFractionFormat fractionFormat) const
     {