diff --git a/.clang-tidy b/.clang-tidy
index b7c39f2b..182f1a55 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -31,7 +31,6 @@ Checks: >
         -modernize-pass-by-value,
         -modernize-return-braced-init-list,
         -modernize-use-auto,
-        -modernize-use-equals-delete,
         -modernize-use-nodiscard,
         -modernize-use-trailing-return-type,
         -readability-avoid-nested-conditional-operator,
diff --git a/simplecpp.cpp b/simplecpp.cpp
index d5b51080..7774fd29 100644
--- a/simplecpp.cpp
+++ b/simplecpp.cpp
@@ -427,6 +427,9 @@ class FileStream : public simplecpp::TokenList::Stream {
         init();
     }
 
+    FileStream(const FileStream&) = delete;
+    FileStream &operator=(const FileStream&) = delete;
+
     ~FileStream() override {
         fclose(file);
         file = nullptr;
@@ -459,9 +462,6 @@ class FileStream : public simplecpp::TokenList::Stream {
             ungetc(ch, file);
     }
 
-    FileStream(const FileStream&);
-    FileStream &operator=(const FileStream&);
-
     FILE *file;
     int lastCh{};
     int lastStatus{};
diff --git a/simplecpp.h b/simplecpp.h
index cbea068b..7e556657 100644
--- a/simplecpp.h
+++ b/simplecpp.h
@@ -130,6 +130,8 @@ namespace simplecpp {
         Token(const Token &tok) :
             macro(tok.macro), op(tok.op), comment(tok.comment), name(tok.name), number(tok.number), whitespaceahead(tok.whitespaceahead), location(tok.location), string(tok.string), mExpandedFrom(tok.mExpandedFrom) {}
 
+        Token &operator=(const Token &tok) = delete;
+
         const TokenString& str() const {
             return string;
         }
@@ -195,9 +197,6 @@ namespace simplecpp {
         TokenString string;
 
         std::set<const Macro*> mExpandedFrom;
-
-        // Not implemented - prevent assignment
-        Token &operator=(const Token &tok);
     };
 
     /** Output from preprocessor */