diff --git a/drivers/pci-function.hh b/drivers/pci-function.hh
index 9163175ec1593a29270b40d3823a2d9b7f1dbb36..6fbf45c1c92b2d72daf55d5d26dc4f07629845e1 100644
--- a/drivers/pci-function.hh
+++ b/drivers/pci-function.hh
@@ -11,7 +11,6 @@
 #include "device.hh"
 
 using namespace processor;
-using namespace std;
 using namespace hw;
 
 namespace pci {