MySQL Can't create Foreign key on a M:M table referencing 1 table

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MySQL

ForeignKey

I have a customer table where a customer will have zero or many contacts, and where a contact can be on any number of customers. The contacts are in the customer table. I created a table called customer_contacts with 2 PKs, one called customer_PK that references the customer_PK of the customer table, and the second PK called contact_PK that references the customer_PK of the customer table. I want to be able to look up all the contacts for a customer, or find all the customers with a specific contact. I get an error with the FK creation that was created by MySQL modeler.

CREATE TABLE IF NOT EXISTS `Abramsdb`.`customer_contact_test` (
  `customer_PK` INT NOT NULL,
  `contact_PK` INT NOT NULL,
  PRIMARY KEY (`customer_PK`, `contact_PK`),
  CONSTRAINT `fk_customer`
    FOREIGN KEY (`customer_PK`)
    REFERENCES `Abramsdb`.`customer` (`customer_PK`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fk_contact`
    FOREIGN KEY (`contact_PK`)
    REFERENCES `Abramsdb`.`customer` (`customer_PK`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB

The error I get is: Error Code: 1215. Cannot add foreign constraint. I remove the fk_contact constraint and the code compiles. I have created tables like this between different tables like customer & phone to handle M:M and there is not an issue. Any ideas about why and a solution?