diff --git a/core/input/generisdata_tech.prn b/core/input/generisdata_tech.prn
index b9f1306562ad542eef32efe06abac7736e13c208..4de4e2e1e33e4bc44c6324a3448af2c968630b1d 100644
--- a/core/input/generisdata_tech.prn
+++ b/core/input/generisdata_tech.prn
@@ -8,7 +8,7 @@ eta         Conversion efficieny, i.e. energy output divided by energy input (fo
 omf         Fixed operation and maintenace costs given as a fraction of investment costs
 omv         Variable operation and maintenance costs given in $(2015)/kWa energy production
 lifetime    given in years
-incolearn   Floor investment costs given in $(2015)/kW electricity capacity
+incolearn   Difference from inco0 to floor investment costs, given in $(2015)/kW electricity capacity for electricity generation technologies
 ccap0       Cumulated capacity in 2005 given in TW
 learn       Learning rate given in percent cost reduction per doubling of cumulated capacity
 $offtext