1 files changed, 4 insertions, 2 deletions
diff --git a/crypt.h b/crypt.h
index 6b2b7ca..6612e01 100644
--- a/crypt.h
+++ b/crypt.h
@@ -1,7 +1,9 @@
 #define _XOPEN_SOURCE
-#include <ctype.h>
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
+#include <string.h> /* strerror(3) */
+#include <unistd.h> /* crypt(3) */
 
 void usage(FILE *, int);
+void error(char *);