diff --git a/src/bytecode.cpp b/src/bytecode.cpp
index 3c18ac1..2e2ae7a 100644
--- a/src/bytecode.cpp
+++ b/src/bytecode.cpp
@@ -88,6 +88,15 @@ Bytecode::Bytecode(const Source& source) :
     jit_exception_set_handler(original_handler);
 }
 
+/**
+ *  Destructor
+ */
+Bytecode::~Bytecode()
+{
+    // if there is a signature, we need to free it
+    if (_function_signature) jit_type_free(_function_signature);
+}
+
 /**
  *  Method to initialize an error label
  *  @param  label
diff --git a/src/bytecode.h b/src/bytecode.h
index fd00447..487f85a 100644
--- a/src/bytecode.h
+++ b/src/bytecode.h
@@ -284,7 +284,7 @@ class Bytecode : private Generator, public Executor
     /**
      *  Destructor
      */
-    virtual ~Bytecode() {};
+    virtual ~Bytecode();
 
     /**
      *  Execute the template given a certain handler