diff --git a/common/debug.cpp b/common/debug.cpp
index a225542b2..2e3d7d3e0 100644
--- a/common/debug.cpp
+++ b/common/debug.cpp
@@ -1,7 +1,6 @@
 #include <iostream>
 #include <string>
 #include <cstdarg>
-#include <string>
 #include <time.h>
 
 #ifdef _WINDOWS