diff --git a/src/compress_ucl.cpp b/src/compress_ucl.cpp
index 38b5d7dc..9e3a9048 100644
--- a/src/compress_ucl.cpp
+++ b/src/compress_ucl.cpp
@@ -120,7 +120,7 @@ int upx_ucl_compress       ( const upx_bytep src, unsigned  src_len,
 
     ucl_compress_config_t cconf; cconf.reset();
     if (cconf_parm)
-        cconf = cconf_parm->conf_ucl; // struct copy
+        memcpy(&cconf, &cconf_parm->conf_ucl, sizeof(cconf)); // cconf = cconf_parm->conf_ucl; // struct copy
 
     ucl_uint *res = cresult->result_ucl.result;
     // assume no info available - fill in worst case results
diff --git a/src/packmast.cpp b/src/packmast.cpp
index 82719639..741d110c 100644
--- a/src/packmast.cpp
+++ b/src/packmast.cpp
@@ -68,8 +68,7 @@ PackMaster::PackMaster(InputFile *f, options_t *o) :
     saved_opt = o;
     if (o)
     {
-        this->local_options = *o;       // struct copy
-        //memcpy(&this->local_options, o, sizeof(*o)); // struct copy
+        memcpy(&this->local_options, o, sizeof(*o)); // struct copy
         opt = &this->local_options;
     }
 }