diff --git a/modules/juce_core/maths/juce_NormalisableRange.h b/modules/juce_core/maths/juce_NormalisableRange.h
index 8c5a4fc59f..341cd0b770 100644
--- a/modules/juce_core/maths/juce_NormalisableRange.h
+++ b/modules/juce_core/maths/juce_NormalisableRange.h
@@ -55,10 +55,12 @@ public:
     NormalisableRange (const NormalisableRange& other) noexcept
         : start (other.start), end (other.end),
           interval (other.interval), skew (other.skew),
-          symmetricSkew (other.symmetricSkew),
-          convertFrom0To1Function (other.convertFrom0To1Function),
-          convertTo0To1Function (other.convertTo0To1Function),
-          snapToLegalValueFunction (other.snapToLegalValueFunction)
+          symmetricSkew (other.symmetricSkew)
+         #if JUCE_COMPILER_SUPPORTS_LAMBDAS
+          , convertFrom0To1Function (other.convertFrom0To1Function)
+          , convertTo0To1Function (other.convertTo0To1Function)
+          , snapToLegalValueFunction (other.snapToLegalValueFunction)
+         #endif
     {
         checkInvariants();
     }
@@ -71,9 +73,11 @@ public:
         interval = other.interval;
         skew = other.skew;
         symmetricSkew = other.symmetricSkew;
+       #if JUCE_COMPILER_SUPPORTS_LAMBDAS
         convertFrom0To1Function = other.convertFrom0To1Function;
         convertTo0To1Function = other.convertTo0To1Function;
         snapToLegalValueFunction = other.snapToLegalValueFunction;
+       #endif
 
         checkInvariants();