diff --git a/extensions/openpower-pels/data_interface.hpp b/extensions/openpower-pels/data_interface.hpp
index d15a580..0e322fa 100644
--- a/extensions/openpower-pels/data_interface.hpp
+++ b/extensions/openpower-pels/data_interface.hpp
@@ -473,7 +473,7 @@
      * @param[in] srcStruct - Full SRC base structure
      */
     virtual void createProgressSRC(
-        const uint64_t& priSRC,
+        const std::vector<uint8_t>& priSRC,
         const std::vector<uint8_t>& srcStruct) const = 0;
 
     /**
@@ -887,7 +887,7 @@
      * @param[in] srcStruct - Full SRC base structure
      */
     void createProgressSRC(
-        const uint64_t& priSRC,
+        const std::vector<uint8_t>& priSRC,
         const std::vector<uint8_t>& srcStruct) const override;
 
     /**