diff --git a/src/PowerFlowFileParser.jl b/src/PowerFlowFileParser.jl
index 7af61c8..1999ba8 100644
--- a/src/PowerFlowFileParser.jl
+++ b/src/PowerFlowFileParser.jl
@@ -22,7 +22,8 @@ import InfrastructureSystems
 const IS = InfrastructureSystems
 
 import InfrastructureSystems:
-    DataFormatError
+    DataFormatError,
+    LinearCurve
 
 #################################################################################
 # Includes
diff --git a/src/definitions.jl b/src/definitions.jl
index f9d43cb..9458fb5 100644
--- a/src/definitions.jl
+++ b/src/definitions.jl
@@ -3,9 +3,6 @@ const PS_MAX_LOG = parse(Int, get(ENV, "PS_MAX_LOG", "50"))
 
 const DEFAULT_BASE_MVA = 100.0
 
-const POWER_SYSTEM_STRUCT_DESCRIPTOR_FILE =
-    joinpath(dirname(pathof(PowerSystems)), "descriptors", "power_system_structs.json")
-
 const DEFAULT_SYSTEM_FREQUENCY = 60.0
 
 const INFINITE_TIME = 1e4