diff --git a/headers/posix/ucontext.h b/headers/posix/ucontext.h
new file mode 100644
index 0000000000..6900401afc
--- /dev/null
+++ b/headers/posix/ucontext.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2008, Haiku Inc. All Rights Reserved.
+ * Distributed under the terms of the MIT license.
+ */
+#ifndef _UCONTEXT_H_
+#define _UCONTEXT_H_
+
+#include <signal.h>
+
+
+typedef struct vregs mcontext_t;
+
+
+typedef struct ucontext_t {
+	ucontext_t	*uc_link;
+	sigset_t	uc_sigmask;
+	stack_t		uc_stack;
+	mcontext_t	uc_mcontext;
+} ucontext_t;
+
+
+#endif /* _UCONTEXT_H_ */