diff --git a/cmd/pg-fill/main.go b/cmd/pg-fill/main.go
index 1b664ce..204e697 100644
--- a/cmd/pg-fill/main.go
+++ b/cmd/pg-fill/main.go
@@ -54,7 +54,7 @@ func run(ctx context.Context) error {
 
 		// https://gist.github.com/ololobus/5b25c432f208d7eb31051a5f238dffff
 		// 2e6=1GB, so 2e6/8=12MB
-		for i := presently(); i < (*n)/12; i++ {
+		for i := presently() / 12; i < (*n)/12; i++ {
 			for ctx.Err() == nil {
 				if _, err := pg.ExecContext(ctx, `
 			   	INSERT INTO fill_with_data (x, y, z)