diff --git a/uppsrc/ide/Debuggers/MIValue.cpp b/uppsrc/ide/Debuggers/MIValue.cpp
index 9d9231a07..f4129f1c1 100644
--- a/uppsrc/ide/Debuggers/MIValue.cpp
+++ b/uppsrc/ide/Debuggers/MIValue.cpp
@@ -370,7 +370,7 @@ int MIValue::Parse(String const &s, int i)
 	}
 }
 
-MIValue const &MIValue::operator=(const MIValue &v)
+MIValue const &MIValue::operator=(MIValue &v)
 {
 	Clear();
 	type = v.type;
@@ -396,7 +396,7 @@ MIValue::MIValue()
 	Clear();
 }
 
-MIValue::MIValue(MIValue const  &v)
+MIValue::MIValue(MIValue &v)
 {
 	Clear();
 	type = v.type;
diff --git a/uppsrc/ide/Debuggers/MIValue.h b/uppsrc/ide/Debuggers/MIValue.h
index d76aacca8..a254ff280 100644
--- a/uppsrc/ide/Debuggers/MIValue.h
+++ b/uppsrc/ide/Debuggers/MIValue.h
@@ -38,10 +38,10 @@ class MIValue : public Moveable<MIValue>
 		// check for emptyness
 		bool IsEmpty(void) const;
 		
-		MIValue const &operator=(const MIValue &v);
+		MIValue const &operator=(MIValue &v);
 		MIValue const &operator=(String const &s);
 		MIValue();
-		MIValue(MIValue const &v);
+		MIValue(MIValue &v);
 		MIValue(String const &s);
 		
 		void Clear(void);