diff --git a/src/ast/function_decoration.h b/src/ast/function_decoration.h
index fb1e3bbf58..d7671382c0 100644
--- a/src/ast/function_decoration.h
+++ b/src/ast/function_decoration.h
@@ -42,7 +42,9 @@ class FunctionDecoration {
 
   /// Outputs the function decoration to the given stream
   /// @param out the stream to output too
+  //! @cond Doxygen_Suppress
   virtual void to_str(std::ostream& out) const = 0;
+  //! @endcond
 
  protected:
   FunctionDecoration();
diff --git a/src/ast/node.h b/src/ast/node.h
index 97c3bcf85c..f02d85edcd 100644
--- a/src/ast/node.h
+++ b/src/ast/node.h
@@ -45,7 +45,9 @@ class Node {
   /// Writes a representation of the node to the output stream
   /// @param out the stream to write to
   /// @param indent number of spaces to indent the node when writing
+  //! @cond Doxygen_Suppress
   virtual void to_str(std::ostream& out, size_t indent) const = 0;
+  //! @endcond
 
   /// Convenience wrapper around the |to_str| method.
   /// @returns the node as a string
diff --git a/src/ast/variable_decoration.h b/src/ast/variable_decoration.h
index fe62123c1a..8cc5f70dc3 100644
--- a/src/ast/variable_decoration.h
+++ b/src/ast/variable_decoration.h
@@ -58,7 +58,9 @@ class VariableDecoration {
 
   /// Outputs the variable decoration to the given stream
   /// @param out the stream to output too
+  //! @cond Doxygen_Suppress
   virtual void to_str(std::ostream& out) const = 0;
+  //! @endcond
 
  protected:
   VariableDecoration();
diff --git a/src/writer/wgsl/generator_impl.h b/src/writer/wgsl/generator_impl.h
index 0a9e6f4056..37be9cb57a 100644
--- a/src/writer/wgsl/generator_impl.h
+++ b/src/writer/wgsl/generator_impl.h
@@ -50,6 +50,7 @@ class GeneratorImpl : public TextGenerator {
   /// @param module the module to generate from
   /// @param stage the pipeline stage
   /// @param name the entry point name
+  /// @returns true on successful generation; false otherwise
   bool GenerateEntryPoint(const ast::Module& module,
                           ast::PipelineStage stage,
                           const std::string& name);
diff --git a/src/writer/writer.h b/src/writer/writer.h
index 51e0307d67..b38657be62 100644
--- a/src/writer/writer.h
+++ b/src/writer/writer.h
@@ -32,7 +32,9 @@ class Writer {
   const std::string& error() const { return error_; }
 
   /// Resets the generator
+  //! @cond Doxygen_Suppress
   virtual void Reset() = 0;
+  //! @endcond
 
   /// Converts the module into the desired format
   /// @returns true on success; false on failure