diff --git a/pyid3lib.cc b/pyid3lib.cc
index cc7cfec..b1dc377 100644
--- a/pyid3lib.cc
+++ b/pyid3lib.cc
@@ -920,7 +920,7 @@ enum frame_type
 
 typedef struct
 {
-    char* name;
+    const char* name;
     ID3_FrameID fid;
     frame_type type;
 } magic_attribute;
@@ -1030,7 +1030,7 @@ static PyObject* id3_getattr( ID3Object* self, char* attrname )
     {
         ID3_Frame* frame;
 	const char* str;
-	char* slash;
+	const char* slash;
         ID3_Field* fld;
 	int i;