diff --git a/screen.c b/screen.c
index cd5a37b2..f0e6e7bb 100644
--- a/screen.c
+++ b/screen.c
@@ -111,7 +111,7 @@ get_screen_bycoord(Display *disp, int x, int y)
 
     for(i = 0; i < screen_number; i++)
         if(x >= si[i].x_org && x < si[i].x_org + si[i].width
-           && y >= si[i].y_org && y < si[i].x_org + si[i].height)
+           && y >= si[i].y_org && y < si[i].y_org + si[i].height)
         {
             XFree(si);
             return i;