diff --git a/commands/cleanupwatchdog.c b/commands/cleanupwatchdog.c
index 5e39afc..501847a 100755
--- a/commands/cleanupwatchdog.c
+++ b/commands/cleanupwatchdog.c
@@ -398,6 +398,7 @@ main(
             return MTC_EXIT_INVALID_PARAMETER;
         }
     }
+    (void)fclose(fp);
     for (idindex = 0; idindex < idnum; idindex++)
     {
         if (id[idindex] == 0)