diff --git a/include/exiv2/config.h b/include/exiv2/config.h
index d81a2a00..01897dea 100644
--- a/include/exiv2/config.h
+++ b/include/exiv2/config.h
@@ -93,11 +93,6 @@ typedef int pid_t;
 #endif
 //////////////////////////////////////
 
-#if defined(_MSC_VER) || defined(__CYGWIN__) || defined(__MINGW__)
-#define __USE_W32_SOCKETS
-#include <winsock2.h>
-#endif
-
 // https://softwareengineering.stackexchange.com/questions/291141/how-to-handle-design-changes-for-auto-ptr-deprecation-in-c11
 #if __cplusplus >= 201103L
   #include <memory>
diff --git a/src/http.cpp b/src/http.cpp
index afd79492..a4c75e9b 100644
--- a/src/http.cpp
+++ b/src/http.cpp
@@ -40,6 +40,11 @@
 
 ////////////////////////////////////////
 // platform specific code
+#if defined(_MSC_VER) || defined(__CYGWIN__) || defined(__MINGW__)
+#define __USE_W32_SOCKETS
+#include <winsock2.h>
+#endif
+
 #if defined(WIN32) || defined(_MSC_VER) || defined(__MINGW__)
 #include <string.h>
 #include <io.h>