diff --git a/src/argp/argp.h b/src/argp/argp.h
index ee59d259d0e4dde67465a8e0043d52557a308701..b7962393d2271eb5bfd7ac9d8f90de00f61de20b 100644
--- a/src/argp/argp.h
+++ b/src/argp/argp.h
@@ -28,6 +28,10 @@
 #define __need_error_t
 #include <errno.h>
 
+#ifndef __THROW
+# define __THROW
+#endif
+
 #ifndef __const
 # define __const const
 #endif