diff --git a/tasks/opencv.py b/tasks/opencv.py
index f86a4f9..56af609 100644
--- a/tasks/opencv.py
+++ b/tasks/opencv.py
@@ -12,7 +12,9 @@
 def build(
     ctx, clean=False, native=False, migration=False, migration_net=False
 ):
-    """ """
+    """
+    Build (and cross-compile) the OpenCV image processing library
+    """
     opencv_dir = join(EXAMPLES_DIR, "opencv")
     if native:
         build_dir = join(opencv_dir, "build", "native")