ROS Service global name not defined

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I am trying to make my node a ROS service which gets triggered when it receives boolean value of true, thus I have added the following to its constructor:

self.imgproc_srv = rospy.Service("/perception/request_detection", RequestDetection, self.detection_processor_srv)

here is the callback:

def detection_processor_srv(self, req): 
         print("It works!")
   return

And of course, I have the file RequestDetection.srv as:

bool detection_requested # our trigger to initiate the visual detection

and I imported this in my script as:

from common.srv import *

which is where I plan to keep the services.

Needless to say, I did catkin_make as well, after all this.

Yet I receive:

NameError: global name 'RequestDetection' is not defined

What am I doing wrong?