diff --git a/CodeGenerator/StrExt.cs b/CodeGenerator/StrExt.cs
index 53ad7d8..dea0d01 100644
--- a/CodeGenerator/StrExt.cs
+++ b/CodeGenerator/StrExt.cs
@@ -30,7 +30,7 @@ namespace CodeGenerator {
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static int ParseFSize(this string str) {
             return str switch {
-                "char" => sizeof(char),
+                "char" => sizeof(sbyte),
                 "short" => sizeof(short),
                 "int" => sizeof(int),
                 "float" => sizeof(float),