diff --git a/hist/hbook/src/hntvar2.f b/hist/hbook/src/hntvar2.f
index 04ab378565c82d522d632380a48393042d9aec94..63e4d9e28aad9bbf25969145c69d6a4626e1c355 100644
--- a/hist/hbook/src/hntvar2.f
+++ b/hist/hbook/src/hntvar2.f
@@ -84,7 +84,8 @@
       ID    = ID1
       IDPOS = LOCATI(IQ(LTAB+1),IQ(LCDIR+KNRH),ID)
       IF (IDPOS .LE. 0) THEN
-         CALL HBUG('Unknown N-tuple','HNTVAR',ID1)
+*         CALL HBUG('Unknown N-tuple','HNTVAR',ID1)
+         print *, 'Unknown Ntuple ',ID1
          RETURN
       ENDIF
       LCID  = LQ(LTAB-IDPOS)