diff --git a/src/drv/drvComet.c b/src/drv/drvComet.c
index 32721e62e..3fe9eb140 100644
--- a/src/drv/drvComet.c
+++ b/src/drv/drvComet.c
@@ -344,7 +344,7 @@ unsigned int		*parg;	/* pointer to the waveform record */
 	/* check for valid card number */
 	if(card >= wf_num_cards[COMET])
 		return ERROR;
-	pconfig = pcomet_config[card];
+	pconfig = (pcomet_config+card);
 	if(signal >= NELEMENTS(pconfig->parg))
 		return ERROR;