diff --git a/sdbusplus/exception.hpp b/sdbusplus/exception.hpp
index f5f6ab6..a0e628e 100644
--- a/sdbusplus/exception.hpp
+++ b/sdbusplus/exception.hpp
@@ -21,6 +21,36 @@
 {
 };
 
+/** Exception for when an invalid conversion from string to enum is
+ *  attempted. */
+struct InvalidEnumString final : public internal_exception
+{
+    static constexpr auto errName =
+        "org.openbmc_project.sdbusplus.Error.InvalidEnumString";
+    static constexpr auto errDesc =
+        "An enumeration mapping was attempted for which no valid enumeration "
+        "value exists.";
+    static constexpr auto errWhat =
+        "org.openbmc_project.sdbusplus.Error.InvalidEnumString: "
+        "An enumeration mapping was attempted for which no valid enumeration "
+        "value exists.";
+
+    const char* name() const noexcept override
+    {
+        return errName;
+    }
+
+    const char* description() const noexcept override
+    {
+        return errDesc;
+    }
+
+    const char* what() const noexcept override
+    {
+        return errWhat;
+    }
+};
+
 } // namespace exception
 
 using exception_t = exception::exception;