diff --git a/INIReader.h b/INIReader.h
index d7be51c..c85410c 100644
--- a/INIReader.h
+++ b/INIReader.h
@@ -28,7 +28,7 @@
                            const char* name, const char* value);
 
 /* Typedef for prototype of fgets-style reader function. */
-typedef char* (*ini_reader)(char* str, int num, void* stream);
+typedef char* (*ini_reader)(char* str, int num, FILE* stream);
 
 /* Parse given INI-style file. May have [section]s, name=value pairs
    (whitespace stripped), and comments starting with ';' (semicolon). Section
@@ -166,7 +166,7 @@
 }
 
 /* See documentation in header file. */
-inline int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
+inline int ini_parse_stream(ini_reader reader, FILE* stream, ini_handler handler,
                      void* user)
 {
     /* Uses a fair bit of stack (use heap instead if you need to) */