We present CCD photometric observations of the W UMa type contact binary EK Comae Berenices using the 2 metre telescope of IUCAA Girawali Observatory , India .
The star was classified as a W UMa type binary of subtype-W by .
The new V band photometric observations of the star reveal that shape of the light curve has changed significantly from the one observed by .
A detailed analysis of the light curve obtained from the high-precision CCD photometric observations of the star indicates that EK Comae Berenices is not a W-type but an A-type totally eclipsing W UMa contact binary .
The photometric mass ratio is determined to be 0.349 \pm 0.005 .
A temperature difference of \Delta T = 141 \pm 10 K between the components and an orbital inclination of i [ ^ { o } ] = 89.800 \pm 0.075 were obtained for the binary system .
Absolute values of masses , radii and luminosities are estimated by means of the standard mass-luminosity relation for zero age main-sequence stars .
The star shows O ’ Connell effect , asymmetries in the light curve shape around the primary and secondary maximum .
The observed O ’ Connell effect is explained by the presence of a hot spot on the primary component .