Breitburn Energy Partners of Los Angeles on Monday received a warning notice of future delisting from the Nasdaq exchange should its stock price fail to rise above $1 for 10 consecutive days over the next six months.

The share price of the oil production master limited partnership plunged below $1 in December after the company suspended its dividend payout. Not only has the company been hammered by the 18-month oil price collapse, but it’s also been burdened with more than $2 billion in debt from an ill-timed oil field purchase three months before the oil price slide began.

The warning letter from Nasdaq came after Breitburn’s share price had closed below $1 for 30 consecutive trading days.

Breitburn shares on Monday fell 9 cents to 63 cents, ending a brief two-day rally off a low of 50 cents.