diff --git a/gnucash/import-export/import-main-matcher.c b/gnucash/import-export/import-main-matcher.c
index 34320bc8fb..dcc228ed70 100644
--- a/gnucash/import-export/import-main-matcher.c
+++ b/gnucash/import-export/import-main-matcher.c
@@ -124,7 +124,6 @@ static gboolean gnc_gen_trans_onButtonPressed_cb (
                     GNCImportMainMatcher *info);
 static gboolean gnc_gen_trans_onPopupMenu_cb (
                     GtkTreeView *treeview,
-                    GdkEvent *event,
                     GNCImportMainMatcher *info);
 static void refresh_model_row (
                     GNCImportMainMatcher *gui,
@@ -651,7 +650,6 @@ gnc_gen_trans_onButtonPressed_cb (GtkTreeView *treeview,
 
 static gboolean
 gnc_gen_trans_onPopupMenu_cb (GtkTreeView *treeview,
-                              GdkEvent *event,
                               GNCImportMainMatcher *info)
 {
     GtkTreeSelection *selection;