diff --git a/src/core/config/OperationConfig.js b/src/core/config/OperationConfig.js
index 92af6cb7..102f0532 100755
--- a/src/core/config/OperationConfig.js
+++ b/src/core/config/OperationConfig.js
@@ -892,7 +892,7 @@ const OperationConfig = {
             "<br><br>",
             "Supported charsets are:",
             "<ul>",
-            Object.keys(CharEnc.IO_FORMAT).map(e => `<li>${e}</li>`).join("<br>"),
+            Object.keys(CharEnc.IO_FORMAT).map(e => `<li>${e}</li>`).join("\n"),
             "</ul>",
         ].join("\n"),
         run: CharEnc.runEncode,
@@ -912,7 +912,7 @@ const OperationConfig = {
             "<br><br>",
             "Supported charsets are:",
             "<ul>",
-            Object.keys(CharEnc.IO_FORMAT).map(e => `<li>${e}</li>`).join("<br>"),
+            Object.keys(CharEnc.IO_FORMAT).map(e => `<li>${e}</li>`).join("\n"),
             "</ul>",
         ].join("\n"),
         run: CharEnc.runDecode,