diff --git a/cscripts/obsutils.py b/cscripts/obsutils.py
index e176335..d2871b1 100755
--- a/cscripts/obsutils.py
+++ b/cscripts/obsutils.py
@@ -365,7 +365,7 @@ def set_obs(pntdir, tstart=0.0, duration=1800.0, deadc=0.95, \
     to the observation container.
 
     Args:
-        pntdir   - Pointing direction [GSkyDir]
+        pntdir: Pointing direction [GSkyDir]
 
     Kwargs:
         tstart:   Start time (seconds) (default: 0.0)