diff --git a/src/sydevs/systems/interactive_system.h b/src/sydevs/systems/interactive_system.h
index 7224fa9..5512613 100644
--- a/src/sydevs/systems/interactive_system.h
+++ b/src/sydevs/systems/interactive_system.h
@@ -187,7 +187,7 @@ duration interactive_system<AgentID, Node, InjData, ObsData>::macro_planned_even
 {
     ++frame_index_;
     planned_dt_ = macro_planned_update(elapsed_dt, injection_, observation_);
-    if (planned_dt_ <= 0_s) throw std::logic_error("Planned duration between interact events in interactive system (" + full_name() + ") must be positive.");
+    if (planned_dt_ <= 0_s) throw std::logic_error("Planned duration between interact events in interactive system (" + this->full_name() + ") must be positive.");
     return planned_dt_;
 }
 
diff --git a/src/sydevs/systems/real_time_buffer.cpp b/src/sydevs/systems/real_time_buffer.cpp
index dbb26ee..0e73e6f 100644
--- a/src/sydevs/systems/real_time_buffer.cpp
+++ b/src/sydevs/systems/real_time_buffer.cpp
@@ -60,7 +60,7 @@ void real_time_buffer::recompute_planned_clock_duration()
         auto syn_planned_sim_dt = current_sim_t_.gap(syn_sim_t_) + planned_sim_dt_;
         auto syn_planned_clk_t = syn_clk_t_ + std::chrono::milliseconds(int64((syn_planned_sim_dt/t_adv_rate_)/1_ms));
         float64 syn_planned_clk_dt = std::chrono::duration_cast<std::chrono::milliseconds>(syn_planned_clk_t - current_clk_t_).count();
-        if (abs(syn_planned_clk_dt - planned_clk_dt_) >= 2.0) {
+        if (std::abs(syn_planned_clk_dt - planned_clk_dt_) >= 2.0) {
             ++syn_count_;
             float64 limited_clk_dt = planned_clk_dt_;
             if (syn_planned_clk_dt > planned_clk_dt_) {