diff --git a/include/wx/valnum.h b/include/wx/valnum.h
index 0385c9f9ad..19320248e4 100644
--- a/include/wx/valnum.h
+++ b/include/wx/valnum.h
@@ -409,7 +409,7 @@ public:
     {
         DoSetMinMax();
 
-        SetPrecision(std::numeric_limits<ValueType>::digits10);
+        this->SetPrecision(std::numeric_limits<ValueType>::digits10);
     }
 
     // Ctor specifying an explicit precision.