diff --git a/Jupiter/Database.cpp b/Jupiter/Database.cpp
index d00e55f..77b1d28 100644
--- a/Jupiter/Database.cpp
+++ b/Jupiter/Database.cpp
@@ -35,13 +35,13 @@ void Jupiter::Database::create_header(FILE *)
 {
 }
 
-bool Jupiter::Database::process_file(Jupiter::ReadableString &file)
+bool Jupiter::Database::process_file(const Jupiter::ReadableString &file)
 {
 	Jupiter::Database::data_->file_name = file;
 	return Jupiter::Database::Data::process_file(this);
 }
 
-bool Jupiter::Database::process_file(Jupiter::CStringType &file)
+bool Jupiter::Database::process_file(const Jupiter::CStringType &file)
 {
 	Jupiter::Database::data_->file_name = file;
 	return Jupiter::Database::Data::process_file(this);
diff --git a/Jupiter/Database.h b/Jupiter/Database.h
index bd61d4f..3fab88f 100644
--- a/Jupiter/Database.h
+++ b/Jupiter/Database.h
@@ -66,8 +66,8 @@ namespace Jupiter
 		* @param file File being processed
 		* @return True on success, false otherwise
 		*/
-		bool process_file(Jupiter::ReadableString &file);
-		bool process_file(Jupiter::CStringType &file);
+		bool process_file(const Jupiter::ReadableString &file);
+		bool process_file(const Jupiter::CStringType &file);
 		bool process_file(const char *file);
 		bool process_file(FILE *file);
 
diff --git a/Release/Jupiter.lib b/Release/Jupiter.lib
index 51e16ae..eef1375 100644
Binary files a/Release/Jupiter.lib and b/Release/Jupiter.lib differ