diff -Nru pdfbox-1.8.12/preflight/src/main/javacc/pdf_extractor.jj pdfbox-1.8.12.javacc/preflight/src/main/javacc/pdf_extractor.jj
--- pdfbox-1.8.12/preflight/src/main/javacc/pdf_extractor.jj	2016-04-22 18:33:22.000000000 +0200
+++ pdfbox-1.8.12.javacc/preflight/src/main/javacc/pdf_extractor.jj	2016-11-14 15:14:49.275844577 +0100
@@ -24,7 +24,7 @@
   STATIC=false;
   DEBUG_PARSER=false;
   DEBUG_TOKEN_MANAGER=false;
-  BUILD_PARSER=false;
+  BUILD_PARSER=true;
 }
 
 // Parser is useless.