diff --git a/gr-jay/lib/peak_detect_impl.cc b/gr-jay/lib/peak_detect_impl.cc
index 53b7458..07aa674 100644
--- a/gr-jay/lib/peak_detect_impl.cc
+++ b/gr-jay/lib/peak_detect_impl.cc
@@ -411,7 +411,7 @@ namespace gr {
 				Peak &peak = m_peakHistory[i];
 				pmt::pmt_t tag_key = pmt::string_to_symbol(std::string("pos_id_") + std::to_string(peak.id));
 				pmt::pmt_t tag_value = pmt::from_long(peak.pos);
-				add_item_tag(DATA, nitems_written(DATA) + peak.pos, tag_key, tag_value, m_tag_id);
+				add_item_tag(DATA, nitems_written(DATA) + k, tag_key, tag_value, m_tag_id);
 			}
 
 			m_frameCount++;