diff --git a/src/isolator/hei_isolator.hpp b/src/isolator/hei_isolator.hpp
index c60835d..207f940 100644
--- a/src/isolator/hei_isolator.hpp
+++ b/src/isolator/hei_isolator.hpp
@@ -55,8 +55,7 @@
     }
 
     /** @brief See API wrapper description in hei_main.hpp. */
-    ReturnCode initialize(void* i_buffer, size_t i_bufferSize,
-                          bool i_forceInit = false);
+    void initialize(void* i_buffer, size_t i_bufferSize);
 
     /**
      * @brief See API wrapper description in hei_main.hpp.