diff --git a/src/err.cpp b/src/err.cpp
index 1ca7200e..cd7a86c6 100644
--- a/src/err.cpp
+++ b/src/err.cpp
@@ -28,7 +28,6 @@
 */
 
 #include "err.hpp"
-#include "platform.hpp"
 
 const char *zmq::errno_to_string (int errno_)
 {