diff --git a/src/loader.rs b/src/loader.rs
index 983e1b2..fffb4e0 100644
--- a/src/loader.rs
+++ b/src/loader.rs
@@ -219,7 +219,7 @@ pub fn parse_block <R: Read> (rdr: &mut R, blocks: &mut Vec <Block>)
 	parse_byte (rdr).unwrap ();   // is_vararg
 	parse_byte (rdr).unwrap ();   // maxstacksize, might be same as num slots?
 	
-	let inst_count = parse_int (rdr).unwrap ();
+	let inst_count = load_size (rdr);
 	let mut instructions = Vec::with_capacity (inst_count as usize);
 	
 	for _ in 0..inst_count {