You are probably right, but it's all listed in the "Okla SDA Lawbook" here:
http://www.ok.gov/osbi/documents/SDA_Lawbook_NOV_2009.pdf
Yeah you're right, but both sets of definitions state which sections they apply to. Only 1290 sections 1-26 are the Oklahoma self defense act. 1289 is not part of the SDA and is the Oklahoma firearms act of 1971.
TITLE 21 § 1290.1. Short Title
SHORT TITLE
Sections 1 through 26 of this act shall be known and may be cited as the Oklahoma Self-Defense Act.
TITLE 21 § 1289.1. Oklahoma firearms act of 1971
OKLAHOMA FIREARMS ACT OF 1971
Sections 1289.1 through 1289.17 of this title may be known and cited as the Oklahoma Firearms Act of 1971.