diff --git a/Sources/Commandant/ArgumentProtocol.swift b/Sources/Commandant/ArgumentProtocol.swift
index 84d7f73..cf73b25 100644
--- a/Sources/Commandant/ArgumentProtocol.swift
+++ b/Sources/Commandant/ArgumentProtocol.swift
@@ -31,32 +31,14 @@ extension String: ArgumentProtocol {
 	}
 }
 
-public extension RawRepresentable where Self.RawValue: StringProtocol, Self: ArgumentProtocol {
-	
+extension RawRepresentable where RawValue: StringProtocol, Self: ArgumentProtocol {
 	public static func from(string: String) -> Self? {
-		
-		guard let stringValue = Self.RawValue(string)
-			else {
-				return .none
-		}
-		
-		return Self(rawValue: stringValue)
-		
+		return RawValue(string).flatMap(Self.init(rawValue:))
 	}
-	
 }
 
-public extension RawRepresentable where Self.RawValue: FixedWidthInteger, Self: ArgumentProtocol {
-	
+extension RawRepresentable where RawValue: FixedWidthInteger, Self: ArgumentProtocol {
 	public static func from(string: String) -> Self? {
-		
-		guard let intValue = Self.RawValue(string)
-			else {
-				return .none
-		}
-		
-		return Self(rawValue: intValue)
-		
+		return RawValue(string).flatMap(Self.init(rawValue:))
 	}
-	
 }
diff --git a/Tests/CommandantTests/OptionsWithEnumProtocolSpec.swift b/Tests/CommandantTests/OptionsWithEnumProtocolSpec.swift
index aed8ca2..650a17c 100644
--- a/Tests/CommandantTests/OptionsWithEnumProtocolSpec.swift
+++ b/Tests/CommandantTests/OptionsWithEnumProtocolSpec.swift
@@ -156,7 +156,6 @@ extension TestEnumOptions: CustomStringConvertible {
 }
 
 enum StrictStringValue: String, ArgumentProtocol {
-	
 	static var name: String = "Strict string value: `foobar`, `bazbuzz`, `one`, `two`, `baz`, `a`, `b` or `c`"
 	
 	case foobar
@@ -167,11 +166,9 @@ enum StrictStringValue: String, ArgumentProtocol {
 	case a
 	case b
 	case c
-	
 }
 
 enum StrictIntValue: UInt8, ArgumentProtocol {
-	
 	static var name: String = "Strict int value: `3`, `5`, `42`, `0`, `255`"
 	
 	case min = 0
@@ -179,5 +176,4 @@ enum StrictIntValue: UInt8, ArgumentProtocol {
 	case giveFive = 5
 	case theAnswerToTheUltimateQuestionOfLifeTheUniverseAndEverything = 42
 	case max = 255
-	
 }