diff --git a/src/script_opt/ZAM/Driver.cc b/src/script_opt/ZAM/Driver.cc
index 614beba6c2..5840d56a9f 100644
--- a/src/script_opt/ZAM/Driver.cc
+++ b/src/script_opt/ZAM/Driver.cc
@@ -210,8 +210,7 @@ void ZAMCompiler::ResolveHookBreaks() {
             // Rewrite the breaks.
             for ( auto& b : breaks[0] ) {
                 auto& i = insts1[b.stmt_num];
-                delete i;
-                i = new ZInstI(OP_HOOK_BREAK_X);
+                *i = ZInstI(OP_HOOK_BREAK_X);
             }
         }
 
diff --git a/src/script_opt/ZAM/ZBody.cc b/src/script_opt/ZAM/ZBody.cc
index 9b77da28ff..1b40902155 100644
--- a/src/script_opt/ZAM/ZBody.cc
+++ b/src/script_opt/ZAM/ZBody.cc
@@ -197,8 +197,8 @@ void ZBody::SetInsts(vector<ZInstI*>& instsI) {
         if ( iI.stmt ) {
             auto l = iI.stmt->Original()->GetLocationInfo();
             if ( l != &no_location )
-                insts_copy[i].loc = std::make_shared<Location>(util::copy_string(l->filename), l->first_line,
-                                                               l->last_line, l->first_column, l->last_column);
+                insts_copy[i].loc = std::make_shared<Location>(l->filename, l->first_line, l->last_line,
+                                                               l->first_column, l->last_column);
         }
     }