diff --git a/generator/src/main/java/io/github/lonamiwebs/overgram/generator/Generator.java b/generator/src/main/java/io/github/lonamiwebs/overgram/generator/Generator.java
index 5ba69b1..886fda2 100644
--- a/generator/src/main/java/io/github/lonamiwebs/overgram/generator/Generator.java
+++ b/generator/src/main/java/io/github/lonamiwebs/overgram/generator/Generator.java
@@ -195,7 +195,7 @@ public class Generator {
     }
 
     private static void writeDeserialize(final Writer writer, final TLObject object) throws IOException {
-        writer.write("public void deserialize(final BinaryReader reader) {\n");
+        writer.write("public void deserialize(final BinaryReader reader) throws ClassNotFoundException {\n");
         for (int i = 0; i < object.args.size(); ++i) {
             final TLArg arg = object.args.get(i);
             if (arg.genericDefinition) {