--- gdcm-2.8.4/Applications/Cxx/gdcminfo.cxx
+++ gdcm-2.8.4/Applications/Cxx/gdcminfo.cxx
@@ -188,7 +188,7 @@ static int checkdeflated(const char *nam
 static std::string getInfoDate(Dict *infoDict, const char *key)
 {
   Object obj;
-  char *s;
+  const char *s;
   int year, mon, day, hour, min, sec, n;
   struct tm tmStruct;
   //char buf[256];
@@ -255,7 +255,7 @@ static std::string getInfoDate(Dict *inf
 static std::string getInfoString(Dict *infoDict, const char *key, UnicodeMap *uMap)
 {
   Object obj;
-  GooString *s1;
+  const GooString *s1;
   GBool isUnicode;
   Unicode u;
   char buf[8];
--- gdcm-2.8.4/Applications/Cxx/gdcmpdf.cxx
+++ gdcm-2.8.4/Applications/Cxx/gdcmpdf.cxx
@@ -37,7 +37,7 @@
 static std::string getInfoDate(Dict *infoDict, const char *key)
 {
   Object obj;
-  char *s;
+  const char *s;
   int year, mon, day, hour, min, sec, n;
   struct tm tmStruct;
   //char buf[256];
@@ -104,7 +104,7 @@ static std::string getInfoDate(Dict *inf
 static std::string getInfoString(Dict *infoDict, const char *key, UnicodeMap *uMap, GBool & unicode)
 {
   Object obj;
-  GooString *s1;
+  const GooString *s1;
   GBool isUnicode = gFalse;
   Unicode u;
   char buf[8];