diff --git a/src/ui/qrgen.cpp b/src/ui/qrgen.cpp
index 98b7480..496f322 100644
--- a/src/ui/qrgen.cpp
+++ b/src/ui/qrgen.cpp
@@ -40,7 +40,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <cstring>
 #include "qrgen.h"
 
-using namespace std;
 
 
 extern "C"{