diff --git a/src/Amalgam/entity/Entity.h b/src/Amalgam/entity/Entity.h
index 0df7d827..62b18755 100644
--- a/src/Amalgam/entity/Entity.h
+++ b/src/Amalgam/entity/Entity.h
@@ -325,7 +325,7 @@ class Entity
 	//Evaluates the specified label into a string and puts the value in value_out.
 	//If the label exists, sets value_out to the value and returns true.
 	// Otherwise sets value_out to empty string and returns false
-	std::pair<std::string,bool> GetValueAtLabelAsString(StringInternPool::StringID label_sid,  bool on_self = false);
+	std::pair<std::string, bool> GetValueAtLabelAsString(StringInternPool::StringID label_sid,  bool on_self = false);
 
 	//Evaluates the specified label into a EvaluableNodeImmediateValueWithType
 	//if destination_temp_enm is not null and code is needed, it will make a copy
diff --git a/src/Amalgam/interpreter/Interpreter.h b/src/Amalgam/interpreter/Interpreter.h
index a41b5030..bbdc1bb5 100644
--- a/src/Amalgam/interpreter/Interpreter.h
+++ b/src/Amalgam/interpreter/Interpreter.h
@@ -515,7 +515,7 @@ class Interpreter
 		return InterpretNode(n, immediate_result);
 	}
 
-	//computes a unary numeric function on the given node
+	//computes a unary numeric function on the given node, returns an ENT_NULL if n is interpreted as an ENT_NULL
 	__forceinline EvaluableNodeReference InterpretNodeUnaryNumericOperation(EvaluableNode *n, bool immediate_result,
 		std::function<double(double)> func)
 	{
@@ -526,6 +526,8 @@ class Interpreter
 		}
 
 		auto retval = InterpretNodeIntoUniqueNumberValueOrNullEvaluableNode(n);
+		if(retval->GetType() == ENT_NULL)
+			return retval;
 		double value = retval->GetNumberValue();
 		double result = func(value);
 		retval->SetTypeViaNumberValue(result);