diff --git a/src/ID.h b/src/ID.h
index 53b4b44fce..75b849b5c1 100644
--- a/src/ID.h
+++ b/src/ID.h
@@ -100,6 +100,8 @@ public:
 
     void SetOption();
     bool IsOption() const { return is_option; }
+
+    void SetBlank() { is_blank = true; }
     bool IsBlank() const { return is_blank; };
 
     void SetEnumConst() { is_enum_const = true; }
diff --git a/src/script_opt/Reduce.cc b/src/script_opt/Reduce.cc
index 27b0753efd..9ed76c31a7 100644
--- a/src/script_opt/Reduce.cc
+++ b/src/script_opt/Reduce.cc
@@ -741,6 +741,9 @@ IDPtr Reducer::GenLocal(const IDPtr& orig) {
     local_id->SetType(orig->GetType());
     local_id->SetAttrs(orig->GetAttrs());
 
+    if ( orig->IsBlank() )
+        local_id->SetBlank();
+
     if ( orig->GetOptInfo()->IsTemp() )
         local_id->GetOptInfo()->SetTemp();