diff --git a/lib/nodes/uldaq.c b/lib/nodes/uldaq.c
index 7875087be..d05e18f65 100644
--- a/lib/nodes/uldaq.c
+++ b/lib/nodes/uldaq.c
@@ -165,11 +165,8 @@ int uldaq_start(struct node *n)
 	DaqDeviceDescriptor descriptors[ULDAQ_MAX_DEV_COUNT];
 	Range ranges[ULDAQ_MAX_RANGE_COUNT];
 
-	unsigned int num_devs = 1, num_ranges = 0;;
-	int descriptor_index = 0;
 	UlError err = ERR_NO_ERROR;
 	int chanCount = 1;//change this to use more than one channel
-	int index = 0;
 
 	// allocate a buffer to receive the data
 	u->in.buffer = (double *) alloc(list_length(&n->signals) * n->in.vectorize * sizeof(double));
@@ -212,7 +209,7 @@ int uldaq_start(struct node *n)
 	// start the acquisition
 	// when using the queue, the lowChan, highChan, u->in.input_mode, and range
 	// parameters are ignored since they are specified in u->queues
-	err = ulAInScan(u->device_handle, 0, 0, u->in.input_mode, 0, n->in.vectorize, &(u->in.sample_rate), u->in.scan_options, u->in.flags, u->in.buffer);
+	err = ulAInScan(u->device_handle, 0, 0, u->in.input_mode, 0, u->in.sample_count, &(u->in.sample_rate), u->in.scan_options, u->in.flags, u->in.buffer);
 	if (err == ERR_NO_ERROR) {
 		ScanStatus status;
 		TransferStatus transferStatus;