diff --git a/Sources/XCTestParametrizedMacroMacros/MacroDeclarationHelper.swift b/Sources/XCTestParametrizedMacroMacros/MacroDeclarationHelper.swift
index dae618d..ef7cf38 100644
--- a/Sources/XCTestParametrizedMacroMacros/MacroDeclarationHelper.swift
+++ b/Sources/XCTestParametrizedMacroMacros/MacroDeclarationHelper.swift
@@ -8,6 +8,17 @@ struct MacroDeclarationHelper {
         self.declaration = declaration
     }
 
+
+    /// Returns 'TokenSyntax' representing name of the input parameter.
+    var inputParamName: TokenSyntax? {
+        declaration.signature.input.parameterList.first?.secondName
+    }
+    
+    /// Returns 'TypeSyntax' representing type of the input object.
+    var inputParamType: TypeSyntax? {
+        declaration.signature.input.parameterList.first?.type
+    }
+
     var firstAttribute: AttributeSyntax? {
         return declaration.attributes.first?.as(AttributeSyntax.self)
     }
diff --git a/Sources/XCTestParametrizedMacroMacros/XCTestParametrizedMacroMacro.swift b/Sources/XCTestParametrizedMacroMacros/XCTestParametrizedMacroMacro.swift
index 3b42951..ee2eda2 100644
--- a/Sources/XCTestParametrizedMacroMacros/XCTestParametrizedMacroMacro.swift
+++ b/Sources/XCTestParametrizedMacroMacros/XCTestParametrizedMacroMacro.swift
@@ -18,11 +18,11 @@ public struct ParametrizeMacro: PeerMacro {
         let macroDeclarationHelper = MacroDeclarationHelper(declaration)
 
         let funcName = declaration.identifier
-        guard let inputParamName = declaration.signature.input.parameterList.first?.secondName?.text else {
+        guard let inputParamName = macroDeclarationHelper.inputParamName?.text else {
             throw ParametrizeMacroError.functionInputParamSecondNameMissing
         }
 
-        guard let inputParamType = declaration.signature.input.parameterList.first?.type else {
+        guard let inputParamType =  macroDeclarationHelper.inputParamType else {
             throw ParametrizeMacroError.functionInputParamTypeMissing
         }