diff --git a/Examples/Echo/Generated/echo.server.pb.swift b/Examples/Echo/Generated/echo.server.pb.swift
index 1d943de13..9af81ac1d 100644
--- a/Examples/Echo/Generated/echo.server.pb.swift
+++ b/Examples/Echo/Generated/echo.server.pb.swift
@@ -274,8 +274,8 @@ public class Echo_EchoServer {
     self.address = address
     self.provider = provider
     guard
-      let certificate = try? String(contentsOf: certificateURL),
-      let key = try? String(contentsOf: keyURL)
+      let certificate = try? String(contentsOf: certificateURL, encoding: .utf8),
+      let key = try? String(contentsOf: keyURL, encoding: .utf8)
       else {
         return nil
     }
diff --git a/Plugin/Templates/server.pb.swift b/Plugin/Templates/server.pb.swift
index 1bc906c49..254727f79 100644
--- a/Plugin/Templates/server.pb.swift
+++ b/Plugin/Templates/server.pb.swift
@@ -121,8 +121,8 @@ public class {{ .|server:protoFile,service }} {
     self.address = address
     self.provider = provider
     guard
-      let certificate = try? String(contentsOf: certificateURL),
-      let key = try? String(contentsOf: keyURL)
+      let certificate = try? String(contentsOf: certificateURL, encoding: .utf8),
+      let key = try? String(contentsOf: keyURL, encoding: .utf8)
       else {
         return nil
     }