diff --git a/modules/37_industry/fixed_shares/declarations.gms b/modules/37_industry/fixed_shares/declarations.gms
index 32cb03b2b..af6204096 100644
--- a/modules/37_industry/fixed_shares/declarations.gms
+++ b/modules/37_industry/fixed_shares/declarations.gms
@@ -31,7 +31,7 @@ Parameters
   o37_demFeIndSub(ttot,all_regi,all_enty,all_enty,secInd37,all_emiMkt)  "FE demand per industry subsector, FE carrier, SE carrier, emissions market"
 
   !! empty parameters from subsectors
-  pm_energy_limit(all_in)    ""   / /
+  pm_energy_limit(all_in)    "empty parameter"   / /
 
   p37_CESMkup_input(all_in)  "markup cost parameter read in from config for CES levels in industry to influence demand-side cost and efficiencies in CES tree [trUSD/CES input]"
   /
diff --git a/tutorials/13_Submit_to_IIASA_database.md b/tutorials/13_Submit_to_IIASA_database.md
index 6de7ec186..ae79a2017 100644
--- a/tutorials/13_Submit_to_IIASA_database.md
+++ b/tutorials/13_Submit_to_IIASA_database.md
@@ -99,14 +99,14 @@ The following functions from `piamInterfaces` might be helpful for further analy
 
 If you like to generate a 'historical.mif' file for a different regional resolution than the REMIND one to pass it to plotIntercomparison, you can use the [regionmapping](https://github.com/pik-piam/piamInterfaces/tree/master/inst/regionmapping) ISO files from piamInterfaces or a similarly formatted file, for example like this:
 ```
-library(madrat); library(mrremind); library(quitte)
+library(madrat); library(mrremind); library(quitte); library(piamInterfaces)
 stopifnot(utils::packageVersion("piamInterfaces") >= "0.35.3")
 setConfig(regionmapping = system.file("regionmapping/ISO_2_ISO.csv", package = "piamInterfaces"))
 d <- madrat::retrieveData("VALIDATIONREMIND")
 system(paste("tar -xvf", d, "./historical.mif"))
 hist <- read.snapshot("historical.mif")
-write.mif(piamInterfaces::convertHistoricalData(hist, "ScenarioMIP", "ISO_2_R10"), "historical_R10.mif")
-write.mif(piamInterfaces::convertHistoricalData(hist, "ScenarioMIP", "ISO_2_R5"), "historical_R5.mif")
+write.mif(convertHistoricalData(hist, "ScenarioMIP", "ISO_2_R10"), "historical_R10.mif")
+write.mif(convertHistoricalData(hist, "ScenarioMIP", "ISO_2_R5"), "historical_R5.mif")
 ```
 
 ## Further Information