Index: uspace/lib/c/include/clipboard.h
===================================================================
--- uspace/lib/c/include/clipboard.h	(revision 7a8af2fa103151ca5b466afc1f9b32c774e99d18)
+++ uspace/lib/c/include/clipboard.h	(revision f5a6e254288c606915b5979aee7eb70d76101ceb)
@@ -36,4 +36,6 @@
 #define _LIBC_CLIPBOARD_H_
 
+#include <errno.h>
+
 extern errno_t clipboard_put_str(const char *);
 extern errno_t clipboard_get_str(char **);