diff --git a/include/re_thread.h b/include/re_thread.h
index ac81647ce..20d58010a 100644
--- a/include/re_thread.h
+++ b/include/re_thread.h
@@ -22,7 +22,10 @@
 #else
 
 #if defined(WIN32)
-struct thrd_win32;
+struct thrd_win32 {
+	HANDLE hdl;
+	uint32_t id;
+};
 
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN
diff --git a/src/thread/win32.c b/src/thread/win32.c
index 9aca00f6b..3f40daaa2 100644
--- a/src/thread/win32.c
+++ b/src/thread/win32.c
@@ -30,10 +30,6 @@ struct thread {
 	void *arg;
 };
 
-struct thrd_win32 {
-	HANDLE hdl;
-	uint32_t id;
-};
 
 static int dtor_register(tss_t key, tss_dtor_t dtor)
 {