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diff --git a/readwrite.h b/readwrite.h
index 2a64968..0a641a3 100644
--- a/readwrite.h
+++ b/readwrite.h
@@ -1,7 +1,4 @@
 #ifndef READWRITE_H
 #define READWRITE_H
-
-extern int read();
-extern int write();
-
+#include <unistd.h>
 #endif