diff --git a/cscripts/obsutils.py b/cscripts/obsutils.py
index d2871b1..914a546 100755
--- a/cscripts/obsutils.py
+++ b/cscripts/obsutils.py
@@ -19,7 +19,7 @@
 # ==========================================================================
 import gammalib
 import ctools
-import math
+#import math
 
 
 # ===================== #