diff --git a/common/partitions/dos.c b/common/partitions/dos.c
index b9f31c3..29f1375 100644
--- a/common/partitions/dos.c
+++ b/common/partitions/dos.c
@@ -107,6 +107,8 @@
 
 	priv->signature = le32_to_cpup((__le32 *)(buf + 0x1b8));
 
+	free(buf);
+
 	return 0;
 }