diff --git a/src/lib/Expr.h b/src/lib/Expr.h
index 3a3f0e5..97be9be 100644
--- a/src/lib/Expr.h
+++ b/src/lib/Expr.h
@@ -67,7 +67,7 @@ struct Expr {
 
 	// Interesting side-effect:
 	// Making the destructor virtual used to cause segmentation faults
-	Expr();
+	~Expr();
 	
 	ExprType type;