diff --git a/src/codegen/codegen_neuron_cpp_visitor.cpp b/src/codegen/codegen_neuron_cpp_visitor.cpp
index 4344697ee..5ba23cabe 100644
--- a/src/codegen/codegen_neuron_cpp_visitor.cpp
+++ b/src/codegen/codegen_neuron_cpp_visitor.cpp
@@ -76,6 +76,12 @@ int CodegenNeuronCppVisitor::position_of_int_var(const std::string& name) const
 }
 
 
+bool CodegenNeuronCppVisitor::parallel_iteration_condition(BlockType type,
+                                                           const ast::Block* block) {
+    return info.thread_safe && CodegenCppVisitor::parallel_iteration_condition(type, block);
+}
+
+
 /****************************************************************************************/
 /*                                Backend specific routines                             */
 /****************************************************************************************/
diff --git a/src/codegen/codegen_neuron_cpp_visitor.hpp b/src/codegen/codegen_neuron_cpp_visitor.hpp
index c0aa55f83..e1fc9fc28 100644
--- a/src/codegen/codegen_neuron_cpp_visitor.hpp
+++ b/src/codegen/codegen_neuron_cpp_visitor.hpp
@@ -149,6 +149,9 @@ class CodegenNeuronCppVisitor: public CodegenCppVisitor {
     int position_of_int_var(const std::string& name) const override;
 
 
+    bool parallel_iteration_condition(BlockType type, const ast::Block* block) override;
+
+
     /****************************************************************************************/
     /*                                Backend specific routines                             */
     /****************************************************************************************/