diff --git a/src/gtrans/gtrans.c b/src/gtrans/gtrans.c
index 15630b20..ee2f3848 100644
--- a/src/gtrans/gtrans.c
+++ b/src/gtrans/gtrans.c
@@ -51,7 +51,7 @@ const char* gtransString(const char* string)
 	return _languageCurrent->strings[i];
 }
 
-const char* gtransIndex(unsigned index)
+const char* gtransIndex(gU32 index)
 {
 	if (!_languageCurrent) {
 		return 0;
diff --git a/src/gtrans/gtrans.h b/src/gtrans/gtrans.h
index d25b1c54..8abf0eab 100644
--- a/src/gtrans/gtrans.h
+++ b/src/gtrans/gtrans.h
@@ -27,7 +27,7 @@
  * @brief A table containing translated strings.
  */
 typedef struct transTable {
-	unsigned numEntries;    /**< The number of strings that this table contains */
+	gU32 numEntries;    /**< The number of strings that this table contains */
 	const char** strings;	/**< The translated strings */
 } transTable;
 
@@ -59,7 +59,7 @@ const char* gtransString(const char* string);
  *
  * @return The string at the given index of the current language or 0 if it doesn't exist.
  */
-const char* gtransIndex(unsigned index);
+const char* gtransIndex(gU32 index);
 
 /**
  * @brief Set the base language.