diff --git a/trick_source/codegen/Interface_Code_Gen/PrintAttributes.cpp b/trick_source/codegen/Interface_Code_Gen/PrintAttributes.cpp
index a348011d..328d64d7 100644
--- a/trick_source/codegen/Interface_Code_Gen/PrintAttributes.cpp
+++ b/trick_source/codegen/Interface_Code_Gen/PrintAttributes.cpp
@@ -131,6 +131,9 @@ bool PrintAttributes::openIOFile(std::string header_file_name) {
                                    open the file and write header information */
                                 outfile.open(io_files[header_file_name].c_str()) ;
                                 printer->printIOHeader(outfile, header_file_name) ;
+                                if ( ! cs.hasTrickHeader(header_file_name) ) {
+                                    std::cout << "No Trick header comment found in " << header_file_name << "" << std::endl ;
+                                }
                                 std::cout << "Writing " << io_files[header_file_name] << "" << std::endl ;
                                 // Get all of the ignored types from this file.
                                 ignored_types[header_file_name] = cs.getIgnoreTypes(header_file_name) ;