diff --git a/NAMESPACE b/NAMESPACE
index 39650267c067be4e272179abeb08fd6df6999d01..dee537f922231832fc24549dcdac45a175d1a3ef 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -2,4 +2,5 @@
 
 export(mb.do)
 export(mb.prep)
+export(presc.single)
 export(sw.do)
diff --git a/R/mix.R b/R/mix.R
index 3825089b0df8728b2f76583c9c88f91256325f87..b6d559352950258837facd63f91de5d58cb55ad2 100644
--- a/R/mix.R
+++ b/R/mix.R
@@ -317,6 +317,7 @@ v<-function(fn_data,stgs_alist,wd,fn_cmpd_list,mode,readMethod="mzR",archdir="ar
 ##' @param nm_arch Archive prefix.
 ##' @return result of RMB_EIC_Prescreen
 ##' @author Todor Kondić
+##' @export
 presc.single <- function(fn_data,stgs_alist,wd,mode,fn_cmpd_l,ppm_lim_fine=10,EIC_limit=0.001,nm_arch="archive") {
     gen_stgs_and_load(fn_data,stgs_alist,wd)