diff --git a/GameData/KerbalConstructionTime/KCT_Presets/default.cfg b/GameData/KerbalConstructionTime/KCT_Presets/default.cfg
index 05015ec..71c34f3 100644
--- a/GameData/KerbalConstructionTime/KCT_Presets/default.cfg
+++ b/GameData/KerbalConstructionTime/KCT_Presets/default.cfg
@@ -41,7 +41,7 @@ KCT_Preset
 		ProceduralPartFormula = (([c]-[A]) + ([A]*10/max([I],1))) / max([B]*([U]+1),1) *[MV]*[PV]
 		BPFormula = ([E]^(1/2))*2000*[O]
 		KSCUpgradeFormula = ([C]^(1/2))*1000*[O]
-		ReconditioningFormula = min([M]*[O]*[E], [X])*abs([RE]-[S]) / ([LM]-[L])
+		ReconditioningFormula = min([M]*[O]*[E], [X])*abs([RE]-[S]) / ([LM]-[L]+1)
 		BuildRateFormula = (([I]+1)*0.05*[N] + max(0.1-[I], 0))*sign(2*[L]-[I]+1)
 		SimCostFormula = max([C]/50000 * min([PM]/[KM], 80) * ([S]/10 + 1) * ([A]/10 + 1) * ([L]^0.5) * 100, 500)
 		KerbinSimCostFormula = max([C]/50000 * ([L]^0.5) * 10, 100)