diff --git a/src/StbTrueType.Generated.FontInfo.cs b/src/StbTrueType.Generated.FontInfo.cs
index be1bba0..486d324 100644
--- a/src/StbTrueType.Generated.FontInfo.cs
+++ b/src/StbTrueType.Generated.FontInfo.cs
@@ -1,6 +1,7 @@
 // Generated by Sichem at 1/2/2022 4:23:36 AM
 
 using Hebron.Runtime;
+using System;
 using System.Runtime.InteropServices;
 
 namespace StbTrueTypeSharp
@@ -1796,7 +1797,7 @@ public static int stbtt_InitFont_internal(stbtt_fontinfo info, byte* data, int f
 			}
 
 			if (info.index_map == 0)
-				return 0;
+				throw new Exception("The font does not have a table mapping from unicode codepoints to font indices.");
 			info.indexToLocFormat = ttUSHORT(data + info.head + 50);
 			return 1;
 		}