diff --git a/font.hh b/font.hh
index 3065b54..7945ecb 100644
--- a/font.hh
+++ b/font.hh
@@ -6,6 +6,10 @@
 class Font
 {
 public:
+	virtual ~Font()
+	{
+	}
+
 	virtual int getHeight(const char *str) = 0;
 
 	virtual int getHeight(const char c)