diff --git a/src/lib/eina/eina_thread.c b/src/lib/eina/eina_thread.c
index b8290cb7a7..a66ca89b18 100644
--- a/src/lib/eina/eina_thread.c
+++ b/src/lib/eina/eina_thread.c
@@ -38,6 +38,8 @@
 # include <windows.h>
 # undef WIN32_LEAN_AND_MEAN
 
+#include <process.h>
+
 typedef struct _Eina_TLS_Cbs_Win32 Eina_TLS_Cbs_Win32;
 struct _Eina_TLS_Cbs_Win32
 {