diff --git a/CHANGELOG b/CHANGELOG
index 7c354d4..db5ad40 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -52,6 +52,7 @@
 - remove unused variable from get_exports().
 - add missing free in handle_mounts().
 - remove redundant if check.
+- fix possible memory leak in master_parse().
 
 xx/xx/2018 autofs-5.1.5
 - fix flag file permission.
diff --git a/daemon/master_parse.y b/daemon/master_parse.y
index 08e44b5..7480c36 100644
--- a/daemon/master_parse.y
+++ b/daemon/master_parse.y
@@ -155,6 +155,8 @@ file: {
 line:
 	| PATH mapspec
 	{
+		if (path)
+			free(path);
 		path = master_strdup($1);
 		if (!path) {
 			local_free_vars();