diff --git a/src/language_server_api.h b/src/language_server_api.h
index c600e74f..cd139ede 100644
--- a/src/language_server_api.h
+++ b/src/language_server_api.h
@@ -273,25 +273,6 @@ struct lsTextDocumentPositionParams {
 };
 MAKE_REFLECT_STRUCT(lsTextDocumentPositionParams, textDocument, position);
 
-struct lsFormattingOptions {
-  // Size of a tab in spaces.
-  int tabSize;
-  // Prefer spaces over tabs.
-  bool insertSpaces;
-};
-MAKE_REFLECT_STRUCT(lsFormattingOptions, tabSize, insertSpaces);
-
-struct lsTextDocumentFormattingParams {
-  // The text document.
-  lsTextDocumentIdentifier textDocument;
-
-  // The format options, like tabs or spaces.
-  lsFormattingOptions formattingOptions;
-};
-MAKE_REFLECT_STRUCT(lsTextDocumentFormattingParams,
-                    textDocument,
-                    formattingOptions);
-
 struct lsTextEdit {
   // The range of the text document to be manipulated. To insert
   // text into a document create a range where start === end.
diff --git a/src/messages/text_document_formatting.cc b/src/messages/text_document_formatting.cc
index e5eaac1e..d6846983 100644
--- a/src/messages/text_document_formatting.cc
+++ b/src/messages/text_document_formatting.cc
@@ -2,6 +2,25 @@
 #include "message_handler.h"
 
 namespace {
+struct lsFormattingOptions {
+  // Size of a tab in spaces.
+  int tabSize;
+  // Prefer spaces over tabs.
+  bool insertSpaces;
+};
+MAKE_REFLECT_STRUCT(lsFormattingOptions, tabSize, insertSpaces);
+
+struct lsTextDocumentFormattingParams {
+  // The text document.
+  lsTextDocumentIdentifier textDocument;
+
+  // The format options, like tabs or spaces.
+  lsFormattingOptions formattingOptions;
+};
+MAKE_REFLECT_STRUCT(lsTextDocumentFormattingParams,
+                    textDocument,
+                    formattingOptions);
+
 struct Ipc_TextDocumentFormatting
     : public IpcMessage<Ipc_TextDocumentFormatting> {
   const static IpcId kIpcId = IpcId::TextDocumentFormatting;