diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index 7f2db0cbd..55ff152e7 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -3476,6 +3476,7 @@
       }
       else
       {
+        localpoints = NULL;
         points      = sharedpoints;
         point_count = spoint_count;
       }