diff --git a/cli_classic.c b/cli_classic.c
index baca900..f541084 100644
--- a/cli_classic.c
+++ b/cli_classic.c
@@ -21,6 +21,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#include <stdio.h>
 #include <fcntl.h>
 #include <sys/types.h>
 #include <sys/stat.h>