diff --git a/include/tesseract/renderer.h b/include/tesseract/renderer.h
index 0f5f4d6f..40135bd9 100644
--- a/include/tesseract/renderer.h
+++ b/include/tesseract/renderer.h
@@ -25,6 +25,7 @@
 // complexity of includes here. Use forward declarations wherever possible
 // and hide includes of complex types in baseapi.cpp.
 #include <string>  // for std::string
+#include <vector>  // for std::vector
 
 struct Pix;
 
@@ -230,8 +231,8 @@ class TESS_API TessPDFRenderer : public TessResultRenderer {
   // used to make everything that isn't easily handled in a
   // streaming fashion.
   long int obj_;                     // counter for PDF objects
-  GenericVector<long int> offsets_;  // offset of every PDF object in bytes
-  GenericVector<long int> pages_;    // object number for every /Page object
+  std::vector<long int> offsets_;  // offset of every PDF object in bytes
+  std::vector<long int> pages_;    // object number for every /Page object
   std::string datadir_;              // where to find the custom font
   bool textonly_;                    // skip images if set
   // Bookkeeping only. DIY = Do It Yourself.
diff --git a/src/api/pdfrenderer.cpp b/src/api/pdfrenderer.cpp
index 7c176e13..b2ace8d0 100644
--- a/src/api/pdfrenderer.cpp
+++ b/src/api/pdfrenderer.cpp
@@ -891,9 +891,9 @@ bool TessPDFRenderer::EndDocumentHandler() {
   stream << kPagesObjectNumber << " 0 obj\n<<\n  /Type /Pages\n  /Kids [ ";
   AppendString(stream.str().c_str());
   size_t pages_objsize  = stream.str().size();
-  for (size_t i = 0; i < pages_.unsigned_size(); i++) {
+  for (const auto& page : pages_) {
     stream.str("");
-    stream << pages_[i] << " 0 R ";
+    stream << page << " 0 R ";
     AppendString(stream.str().c_str());
     pages_objsize += stream.str().size();
   }