diff --git a/src/internal/slibtool_readlink_impl.h b/src/internal/slibtool_readlink_impl.h
index f66e10b..c511147 100644
--- a/src/internal/slibtool_readlink_impl.h
+++ b/src/internal/slibtool_readlink_impl.h
@@ -18,7 +18,7 @@ static inline int slbt_readlink(
 	else if (ret == bufsize)
 		return -1;
 	else {
-		buf[ret] = '\0';
+		buf[ret] = 0;
 		return 0;
 	}
 }