overcorrection
/ˌəʊvəkəˈrɛkʃn/noun
1 Optics. Correction of a lens or sight defect so that there is an aberration opposite to that of the uncorrected lens or defect.
2Excessive correction; correction which results in error or excess in the opposite direction; an instance of this.
3 Linguistics. = hypercorrection.
Origin
Mid 19th century. From over- + correction, after overcorrect.