diff --git a/sysctl.c b/sysctl.c
index 33c94035..51af15dc 100644
--- a/sysctl.c
+++ b/sysctl.c
@@ -645,6 +645,13 @@ static int PreloadSystem(void)
 			printf(_("* Applying %s ...\n"), DEFAULT_PRELOAD);
 		rc |= Preload(DEFAULT_PRELOAD);
 	}
+
+	/* cleaning */
+	for (i = 0; i < ncfgs; ++i) {
+		free(cfgs[i]);
+	}
+	if (cfgs) free(cfgs);
+
 	return rc;
 }