diff --git a/plugins/sudoers/sudoreplay.c b/plugins/sudoers/sudoreplay.c
index d7b152dd2..bf416a601 100644
--- a/plugins/sudoers/sudoreplay.c
+++ b/plugins/sudoers/sudoreplay.c
@@ -311,6 +311,7 @@ main(int argc, char *argv[])
     if (lfile == NULL)
 	error(1, "unable to open %s", path);
     cp = NULL;
+    len = 0;
     getline(&cp, &len, lfile); /* log */
     getline(&cp, &len, lfile); /* cwd */
     getline(&cp, &len, lfile); /* command */