diff --git a/IO/src/ImageLoaderKTX.cpp b/IO/src/ImageLoaderKTX.cpp
index d1f1bd0..edb1dc0 100644
--- a/IO/src/ImageLoaderKTX.cpp
+++ b/IO/src/ImageLoaderKTX.cpp
@@ -99,6 +99,7 @@ class IntLoader {
     data.Advance(4);
     return true;
   }
+  virtual ~IntLoader() { }
 };
 
 class BigEndianIntLoader : public IntLoader {