diff --git a/server/Sample/sfreerdp.c b/server/Sample/sfreerdp.c
index b8c10f4b7..da1d6505c 100644
--- a/server/Sample/sfreerdp.c
+++ b/server/Sample/sfreerdp.c
@@ -28,6 +28,7 @@
 
 #include <winpr/crt.h>
 #include <winpr/synch.h>
+#include <winpr/string.h>
 #include <winpr/path.h>
 #include <winpr/winsock.h>
 
diff --git a/winpr/libwinpr/synch/event.c b/winpr/libwinpr/synch/event.c
index a5af293c8..e561eaa41 100644
--- a/winpr/libwinpr/synch/event.c
+++ b/winpr/libwinpr/synch/event.c
@@ -376,7 +376,7 @@ int SetEventFileDescriptor(HANDLE hEvent, int FileDescriptor, ULONG mode)
 		return -1;
 
 	event = (WINPR_EVENT*) Object;
-	event->bAttached = FALSE;
+	event->bAttached = TRUE;
 	event->Mode = mode;
 	event->pipe_fd[0] = FileDescriptor;
 	return 0;