diff --git a/src/smithy.zig b/src/smithy.zig
index 06e4e0c..3ed1a81 100644
--- a/src/smithy.zig
+++ b/src/smithy.zig
@@ -868,7 +868,7 @@ fn read_file_to_string(allocator: std.mem.Allocator, file_name: []const u8, max_
     return file.readToEndAlloc(allocator, max_bytes);
 }
 const test_data: []const u8 = @embedFile("test.json");
-const intrinsic_type_count: usize = 5; // 5 intrinsic types are added to every model
+const intrinsic_type_count: usize = 15; // 15 intrinsic types are added to every model (see shapes() function)
 
 test "parse string" {
     const test_string =