diff --git a/debianutils/pipe_progress.c b/debianutils/pipe_progress.c
index 81ce395c9..ab05202eb 100644
--- a/debianutils/pipe_progress.c
+++ b/debianutils/pipe_progress.c
@@ -20,6 +20,7 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 #include <time.h>