diff --git a/src/FDM/YASim/Launchbar.cpp b/src/FDM/YASim/Launchbar.cpp
index ebe599999..e96f27fdd 100644
--- a/src/FDM/YASim/Launchbar.cpp
+++ b/src/FDM/YASim/Launchbar.cpp
@@ -5,7 +5,6 @@
 
 #include "Launchbar.hpp"
 
-using namespace std;
 namespace yasim {
 
   static const float YASIM_PI2 = 3.14159265358979323846/2;