diff --git a/source/Pravets.cpp b/source/Pravets.cpp
index a88161ca..d808584b 100644
--- a/source/Pravets.cpp
+++ b/source/Pravets.cpp
@@ -261,6 +261,9 @@ BYTE Pravets::ConvertToKeycode(WPARAM key, BYTE keycode)
 
 BYTE Pravets::ConvertToPrinterChar(BYTE value)
 {
+	if (m_Kir8ACapital == 0 || m_Kir8ALowerCase == 0 || m_Kir82 == 0)
+		return value;
+
 	BYTE c = 0;
 
 	if (GetApple2Type() == A2TYPE_PRAVETS8A)  // Print conversion for Pravets 8A/C
diff --git a/source/Pravets.h b/source/Pravets.h
index 8a99c3bf..14ed58f3 100644
--- a/source/Pravets.h
+++ b/source/Pravets.h
@@ -4,7 +4,12 @@ class Pravets
 {
 public:
 	Pravets(void);
-	~Pravets(void){}
+	~Pravets(void)
+	{
+		delete [] m_Kir8ACapital;
+		delete [] m_Kir8ALowerCase;
+		delete [] m_Kir82;
+	}
 
 	void Reset(void);