diff --git a/src/ui.c b/src/ui.c
index 9d7c2ca..ac0cc27 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -1897,7 +1897,7 @@
     garray_T	*gap;
 
     /* We use a growarray to store the data pointer and the length. */
-    gap = (garray_T *)alloc(sizeof(garray_T));
+    gap = ALLOC_ONE(garray_T);
     if (gap != NULL)
     {
 	/* Add one to avoid a zero size. */