diff --git a/gcc/cobol/cdf.y b/gcc/cobol/cdf.y
index 9cfe75824aeb8f6ef4505f24dd9cf8fb086e36be..e59c6b10dd7796d9f6f009a6f609fc6c57b82d6f 100644
--- a/gcc/cobol/cdf.y
+++ b/gcc/cobol/cdf.y
@@ -73,8 +73,6 @@ void ydferror( char const *s, int );
 %code requires {
   #include "cdfval.h"
 
-//  #include <map>
-//  #include <string>
   using std::map;
 
   static map<std::string, cdfval_t> dictionary;