diff -ru a/report.cpp b/report.cpp
--- a/report.cpp	2009-06-26 00:14:35.000000000 +0400
+++ b/report.cpp	2022-09-13 03:14:57.099646650 +0300
@@ -25,7 +25,7 @@
 
 extern bool bSuppressInfo;
 
-int PrintMessage(ostream *out,char *caption,char *filename,char *message,int iErrorFrame);
+int PrintMessage(ostream *out,char const *caption,char const *filename,char const *message,int iErrorFrame);
 
 int PrintReport(ostream *out,char *filename,MPEGINFO *mpginfo) {
 	int frame_types=0;
@@ -228,7 +228,7 @@
 
 }
 
-int PrintMessage(ostream *out,char *caption,char *filename,char *message,int iErrorFrame) {
+int PrintMessage(ostream *out,char const *caption,char const *filename,char const *message,int iErrorFrame) {
 	(*out)<<caption<<": ";
 	if(iErrorFrame>=0) {
 		(*out)<<"\""<<filename<<"\" (offset 0x"<<hex<<iErrorFrame<<dec<<"): ";
diff -ru a/report.h b/report.h
--- a/report.h	2009-06-26 00:14:38.000000000 +0400
+++ b/report.h	2022-09-13 03:16:15.290808115 +0300
@@ -27,6 +27,6 @@
 #include "mpegparse.h"
 
 int PrintReport(ostream *out,char *filename,MPEGINFO *mpginfo);
-int PrintMessage(ostream *out,char *caption,char *filename,char *message,int iErrorFrame);
+int PrintMessage(ostream *out,char const *caption,char const *filename,char const *message,int iErrorFrame);
 
 #endif