diff --git a/CTRTests/Infrastrucure/Services/IdentityCheckerTests.swift b/CTRTests/Infrastrucure/Services/IdentityCheckerTests.swift
index 7854c924b..9bdca754d 100644
--- a/CTRTests/Infrastrucure/Services/IdentityCheckerTests.swift
+++ b/CTRTests/Infrastrucure/Services/IdentityCheckerTests.swift
@@ -275,7 +275,8 @@ class IdentityCheckerTests: XCTestCase {
 			"Rool": "R",
 			"rool": "R",
 			" rool": "R",
-			"-rool": "R"
+			"-rool": "R",
+			"Jan": "J"
 		]
 		for (value, expected) in values {
 			let identity = EventFlow.Identity(infix: nil, firstName: value, lastName: nil, birthDateString: nil)
diff --git a/Sources/CTR/Infrastructure/Services/IdentityChecker.swift b/Sources/CTR/Infrastructure/Services/IdentityChecker.swift
index 9394c1d68..d64a5b552 100644
--- a/Sources/CTR/Infrastructure/Services/IdentityChecker.swift
+++ b/Sources/CTR/Infrastructure/Services/IdentityChecker.swift
@@ -170,7 +170,7 @@ extension EventFlow.Identity {
 class Normalizer {
 
 	static let permittedCharacterSet = CharacterSet(charactersIn: "abcdefghijklmnopqrstuvwxyz ")
-	static let initialsCharacterSet = CharacterSet(charactersIn: "ABCDEFGHILKLMNOPQRSTUVWXYZ")
+	static let initialsCharacterSet = CharacterSet(charactersIn: "ABCDEFGHIJKLMNOPQRSTUVWXYZ")
 	static let filterCharacterSet = CharacterSet(charactersIn: "-' ")
 
 	/// Normalize any input, transform to latin, remove all diacritics