diff --git a/src/r_plane.c b/src/r_plane.c
index db5bfbda..659481ec 100644
--- a/src/r_plane.c
+++ b/src/r_plane.c
@@ -402,7 +402,7 @@ static visplane_t *new_visplane(unsigned hash)
 	visplane_t *check = freetail;
 	if (!check)
 	{
-		check = calloc(2, sizeof (*check));
+		check = calloc(1, sizeof (*check));
 		if (check == NULL) I_Error("%s: Out of memory", "new_visplane"); // FIXME: ugly
 	}
 	else