diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index ab4f376e92..11ddc857bc 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -956,7 +956,7 @@ set_inherit_target_rel_sizes(PlannerInfo *root, RelOptInfo *rel,
 							 Index rti, RangeTblEntry *rte)
 {
 	int			parentRTindex = rti;
-	bool		has_live_children;
+	bool		has_live_children = false;
 	ListCell   *l;
 
 	/* Guard against stack overflow due to overly deep inheritance tree. */