diff --git a/R/dedup.R b/R/dedup.R
index ef58cda..d32ccae 100644
--- a/R/dedup.R
+++ b/R/dedup.R
@@ -95,8 +95,8 @@ dedup_citations_add_manual <- function(unique_citations, additional_pairs) {
   unique_citations$source = unique_citations$cite_source
   unique_citations$label = unique_citations$cite_label
   
-  dedup_results <- ASySD::dedup_citations_add_manual(unique_citations, additional_pairs = additional_pairs,
-                                                     extra_merge_fields = "cite_string")
+  dedup_results <- ASySD::dedup_citations_add_manual(unique_citations, additional_pairs = additional_pairs
+                                                     )
 
   dedup_results$cite_source <- dedup_results$source
   dedup_results$cite_label <- dedup_results$label