diff --git a/3rdparty/fcpp/cpp1.c b/3rdparty/fcpp/cpp1.c
index f101c2a85..17e6fc88c 100644
--- a/3rdparty/fcpp/cpp1.c
+++ b/3rdparty/fcpp/cpp1.c
@@ -143,7 +143,7 @@ int fppPreProcess(struct fppTag *tags)
 #endif
   }
   fflush(stdout);
-  fclose(stdout);
+// BK -  fclose(stdout);
 
   if (global->errors > 0 && !global->eflag)
     return(IO_ERROR);