diff -ru poppler-0.8.6.orig/poppler/UnicodeMap.cc poppler-0.8.6/poppler/UnicodeMap.cc
--- poppler-0.8.6.orig/poppler/UnicodeMap.cc	2008-08-25 17:24:45.000000000 +0100
+++ poppler-0.8.6/poppler/UnicodeMap.cc	2008-08-25 17:25:45.000000000 +0100
@@ -121,7 +121,7 @@
 #endif
 }
 
-UnicodeMap::UnicodeMap(char *encodingNameA, GBool unicodeOutA,
+UnicodeMap::UnicodeMap(const char *encodingNameA, GBool unicodeOutA,
 		       UnicodeMapRange *rangesA, int lenA) {
   encodingName = new GooString(encodingNameA);
   unicodeOut = unicodeOutA;
@@ -136,7 +136,7 @@
 #endif
 }
 
-UnicodeMap::UnicodeMap(char *encodingNameA, GBool unicodeOutA,
+UnicodeMap::UnicodeMap(const char *encodingNameA, GBool unicodeOutA,
 		       UnicodeMapFunc funcA) {
   encodingName = new GooString(encodingNameA);
   unicodeOut = unicodeOutA;
diff -ru poppler-0.8.6.orig/poppler/UnicodeMap.h poppler-0.8.6/poppler/UnicodeMap.h
--- poppler-0.8.6.orig/poppler/UnicodeMap.h	2008-08-25 17:24:45.000000000 +0100
+++ poppler-0.8.6/poppler/UnicodeMap.h	2008-08-25 17:26:00.000000000 +0100
@@ -52,12 +52,12 @@
   static UnicodeMap *parse(GooString *encodingNameA);
 
   // Create a resident UnicodeMap.
-  UnicodeMap(char *encodingNameA, GBool unicodeOutA,
+  UnicodeMap(const char *encodingNameA, GBool unicodeOutA,
 	     UnicodeMapRange *rangesA, int lenA);
 
   // Create a resident UnicodeMap that uses a function instead of a
   // list of ranges.
-  UnicodeMap(char *encodingNameA, GBool unicodeOutA,
+  UnicodeMap(const char *encodingNameA, GBool unicodeOutA,
 	     UnicodeMapFunc funcA);
 
   ~UnicodeMap();