diff --git a/utils/azone2/dat.cpp b/utils/azone2/dat.cpp
index 4d1dc8459..315b2618a 100644
--- a/utils/azone2/dat.cpp
+++ b/utils/azone2/dat.cpp
@@ -136,7 +136,7 @@ DATLoader::~DATLoader()
 	this->Close();
 }
 
-int DATLoader::Open(char *base_path, char *zone_name, Archive *archive) {
+int DATLoader::Open(char *base_path, const char *zone_name, Archive *archive) {
 
 #ifdef DEBUGDAT
 	printf("DATLoader::Open %s, [%s]\n", base_path, zone_name);
diff --git a/utils/azone2/dat.hpp b/utils/azone2/dat.hpp
index 84f519de1..2d4d3e02a 100644
--- a/utils/azone2/dat.hpp
+++ b/utils/azone2/dat.hpp
@@ -54,7 +54,7 @@ class DATLoader : public FileLoader {
 public:
   DATLoader();
   ~DATLoader();
-  virtual int Open(char *base_path, char *zone_name, Archive *archive);
+  virtual int Open(char *base_path, const char *zone_name, Archive *archive);
   virtual int Close();
 };
 
diff --git a/utils/azone2/file_loader.hpp b/utils/azone2/file_loader.hpp
index adbe752b4..5f87ef89f 100644
--- a/utils/azone2/file_loader.hpp
+++ b/utils/azone2/file_loader.hpp
@@ -9,7 +9,7 @@ public:
   FileLoader() {}
   virtual ~FileLoader() {}
 
-  virtual int Open(char *base_path, char *zone_name, Archive *archive) = 0;
+  virtual int Open(char *base_path, const char *zone_name, Archive *archive) = 0;
   virtual int Close() = 0;
 
   Content_3D model_data;
diff --git a/utils/azone2/ter.cpp b/utils/azone2/ter.cpp
index dc6c1c0f5..c4b6ac1c3 100644
--- a/utils/azone2/ter.cpp
+++ b/utils/azone2/ter.cpp
@@ -20,7 +20,7 @@ TERLoader::~TERLoader() {
   this->Close();
 }
 
-int TERLoader::Open(char *base_path, char *zone_name, Archive *archive) {
+int TERLoader::Open(char *base_path, const char *zone_name, Archive *archive) {
 
 #ifdef DEBUGTER
   printf("TERLoader::Open %s, [%s]\n", base_path, zone_name);
diff --git a/utils/azone2/ter.hpp b/utils/azone2/ter.hpp
index 197c89fa4..70ccb72b7 100644
--- a/utils/azone2/ter.hpp
+++ b/utils/azone2/ter.hpp
@@ -55,7 +55,7 @@ class TERLoader : public FileLoader {
 public:
   TERLoader();
   ~TERLoader();
-  virtual int Open(char *base_path, char *zone_name, Archive *archive);
+  virtual int Open(char *base_path, const char *zone_name, Archive *archive);
   virtual int Close();
 };
 
diff --git a/utils/azone2/wld.cpp b/utils/azone2/wld.cpp
index 143af6474..077a29cac 100644
--- a/utils/azone2/wld.cpp
+++ b/utils/azone2/wld.cpp
@@ -461,7 +461,7 @@ WLDLoader::~WLDLoader() {
   this->Close();
 }
 
-int WLDLoader::Open(char *base_path, char *zone_name, Archive *archive) {
+int WLDLoader::Open(char *base_path, const char *zone_name, Archive *archive) {
   uchar *buffer;
   int buf_len;
   int i, j, vc, pc, bc, mlen, *pmap;
diff --git a/utils/azone2/wld.hpp b/utils/azone2/wld.hpp
index b6760ea8a..a6f072c77 100644
--- a/utils/azone2/wld.hpp
+++ b/utils/azone2/wld.hpp
@@ -34,7 +34,7 @@ public:
   WLDLoader();
   ~WLDLoader();
   
-  virtual int Open(char *base_path, char *zone_name, Archive *archive);
+  virtual int Open(char *base_path, const char *zone_name, Archive *archive);
   virtual int Close();
 
   int fragcount;
diff --git a/utils/azone2/zon.cpp b/utils/azone2/zon.cpp
index 0f7d43bd3..bf2eb5f94 100644
--- a/utils/azone2/zon.cpp
+++ b/utils/azone2/zon.cpp
@@ -22,7 +22,7 @@ ZonLoader::~ZonLoader() {
   this->Close();
 }
 
-int ZonLoader::Open(char *base_path, char *zone_name, Archive *archive) {
+int ZonLoader::Open(char *base_path, const char *zone_name, Archive *archive) {
   uchar *buffer, *orig_buffer;
   int buf_len;
 
diff --git a/utils/azone2/zon.hpp b/utils/azone2/zon.hpp
index 876bdfc4e..bfc045ee4 100644
--- a/utils/azone2/zon.hpp
+++ b/utils/azone2/zon.hpp
@@ -36,7 +36,7 @@ public:
   ZonLoader();
   ~ZonLoader();
  
-  virtual int Open(char *base_path, char *zone_name, Archive *archive);
+  virtual int Open(char *base_path, const char *zone_name, Archive *archive);
   virtual int Close();
 
 private:
diff --git a/utils/azone2/zonv4.cpp b/utils/azone2/zonv4.cpp
index 71a6d258f..5fb04b2e7 100644
--- a/utils/azone2/zonv4.cpp
+++ b/utils/azone2/zonv4.cpp
@@ -24,7 +24,7 @@ Zonv4Loader::~Zonv4Loader()
 	this->Close();
 }
 
-int Zonv4Loader::Open(char *base_path, char *zone_name, Archive *archive)
+int Zonv4Loader::Open(char *base_path, const char *zone_name, Archive *archive)
 {
 	
 	uchar *buffer;
diff --git a/utils/azone2/zonv4.hpp b/utils/azone2/zonv4.hpp
index c97b3bbd5..cedc7d387 100644
--- a/utils/azone2/zonv4.hpp
+++ b/utils/azone2/zonv4.hpp
@@ -32,7 +32,7 @@ public:
   Zonv4Loader();
   ~Zonv4Loader();
  
-  virtual int Open(char *base_path, char *zone_name, Archive *archive);
+  virtual int Open(char *base_path, const char *zone_name, Archive *archive);
   virtual int Close();
 
 private: