diff --git a/src/backend/nodes/tidbitmap.c b/src/backend/nodes/tidbitmap.c
index c4e53ad..a20505b 100644
--- a/src/backend/nodes/tidbitmap.c
+++ b/src/backend/nodes/tidbitmap.c
@@ -1411,7 +1411,7 @@ tbm_lossify(TIDBitmap *tbm)
 		/* This does the dirty work ... */
 		tbm_mark_page_lossy(tbm, page->blockno);
 
-		if (tbm->nentries <= tbm->maxentries / 2)
+		if (tbm->nentries <= tbm->maxentries * 0.9)
 		{
 			/*
 			 * We have made enough room. Remember where to start lossifying