diff --git a/backends/libpurple/main.cpp b/backends/libpurple/main.cpp
index 39c536276e853a6d7b8e17e94e0f9ac68769db03..8defa6b97d0a22f9e6e461ed18a94be14300eddd 100644
--- a/backends/libpurple/main.cpp
+++ b/backends/libpurple/main.cpp
@@ -24,6 +24,11 @@
 #include <event.h>
 #endif
 
+#ifdef WIN32
+#include <process.h>
+#define getpid _getpid
+#endif
+
 using namespace log4cxx;
 
 static LoggerPtr logger_libpurple = log4cxx::Logger::getLogger("libpurple");