diff --git a/include/qpdf/QPDFTokenizer.hh b/include/qpdf/QPDFTokenizer.hh
index db95eff..ec9e66c 100644
--- a/include/qpdf/QPDFTokenizer.hh
+++ b/include/qpdf/QPDFTokenizer.hh
@@ -204,6 +204,9 @@ class QPDFTokenizer
     QPDF_DLL
     void expectInlineImage(std::shared_ptr<InputSource> input);
 
+  private:
+    friend class QPDFParser;
+
     // Read a token from an input source. Context describes the
     // context in which the token is being read and is used in the
     // exception thrown if there is an error. After a token is read,
@@ -212,7 +215,7 @@ class QPDFTokenizer
     // offset" as returned by input->getLastOffset() points to the
     // beginning of the token. Returns false if the token is bad
     // or if scanning produced an error message for any reason.
-    QPDF_DLL
+
     bool nextToken(
         InputSource& input, std::string const& context, size_t max_len = 0);