diff --git a/src/codegen/c.zig b/src/codegen/c.zig
index 19f98d216af2da4c7d49b90fba51a80a4af07bde..22f91feeaa18aeb4b1865522f3e9394d8a05b60f 100644
--- a/src/codegen/c.zig
+++ b/src/codegen/c.zig
@@ -542,6 +542,15 @@ pub const DeclGen = struct {
                                     return writer.print("{d}", .{field_index});
                                 }
                             },
+                            .enum_numbered => {
+                                const enum_obj = ty.castTag(.enum_numbered).?.data;
+                                if (enum_obj.values.count() != 0) {
+                                    const tag_val = enum_obj.values.keys()[field_index];
+                                    return dg.renderValue(writer, enum_obj.tag_ty, tag_val);
+                                } else {
+                                    return writer.print("{d}", .{field_index});
+                                }
+                            },
                             else => unreachable,
                         }
                     },