diff --git a/desmume/src/slot1.h b/desmume/src/slot1.h
index 4513807c1..679508c64 100644
--- a/desmume/src/slot1.h
+++ b/desmume/src/slot1.h
@@ -53,6 +53,7 @@ private:
 class ISlot1Interface
 {
 public:
+   virtual ~ISlot1Interface() {}
 	//called to get info about device (description)
 	virtual Slot1Info const* info() = 0;
 
diff --git a/desmume/src/slot2.h b/desmume/src/slot2.h
index eef4d3f78..aceb11784 100644
--- a/desmume/src/slot2.h
+++ b/desmume/src/slot2.h
@@ -54,6 +54,7 @@ private:
 class ISlot2Interface
 {
 public:
+   virtual ~ISlot2Interface() {}
 	//called to get info about device (description)
 	virtual Slot2Info const* info() = 0;