diff --git a/Sources/XcodeDeadStrings/DeadStringData.swift b/Sources/XcodeDeadStrings/DeadStringData.swift
index 73f9510..342a7bd 100644
--- a/Sources/XcodeDeadStrings/DeadStringData.swift
+++ b/Sources/XcodeDeadStrings/DeadStringData.swift
@@ -61,7 +61,9 @@ public struct DeadStringsData {
 
         for (url, rangesToDelete) in stringsToDelete {
             let data = FileManager.default.contents(atPath: url.path) ?? Data()
-            var contents = String(decoding: data, as: UTF8.self)
+            var contents = String(data: data, encoding: .utf8)
+                ?? String(data: data, encoding: .utf16)
+                ?? ""
             for range in rangesToDelete {
                 contents.removeSubrange(range)
             }
diff --git a/Sources/XcodeDeadStrings/ExtractLocalizedKeys.swift b/Sources/XcodeDeadStrings/ExtractLocalizedKeys.swift
index 293aacb..6926de9 100644
--- a/Sources/XcodeDeadStrings/ExtractLocalizedKeys.swift
+++ b/Sources/XcodeDeadStrings/ExtractLocalizedKeys.swift
@@ -78,7 +78,9 @@ func extractLocalizedKeys(from contents: String, url: URL) -> [LocationStringRes
 
 func extractLocalizedKeys(fromFileAt url: URL) -> [LocationStringResult] {
     guard let data = FileManager.default.contents(atPath: url.path) else { return [] }
-    let contents = String(decoding: data, as: UTF8.self)
+    let contents = String(data: data, encoding: .utf8)
+        ?? String(data: data, encoding: .utf16)
+        ?? ""
     return extractLocalizedKeys(from: contents, url: url)
 }