1 files changed, 2 insertions, 0 deletions
diff --git a/src/outputgen.h b/src/outputgen.h
index 93f1046..7d7834a 100644
--- a/src/outputgen.h
+++ b/src/outputgen.h
@@ -378,6 +378,8 @@ class OutputGenerator : public BaseOutputDocInterface
 class OutputDocInterface : public BaseOutputDocInterface
 {
   public:
+    virtual ~OutputDocInterface() {}
+
     /*! Create a new output generator. This can later by appended
      *  to the current one using append().
      */