diff --git a/Source/Engine/Visject/ShaderGraph.cpp b/Source/Engine/Visject/ShaderGraph.cpp
index 3ce197a18..ef4f53cf9 100644
--- a/Source/Engine/Visject/ShaderGraph.cpp
+++ b/Source/Engine/Visject/ShaderGraph.cpp
@@ -372,8 +372,8 @@ void ShaderGenerator::ProcessGroupMath(Box* box, Node* node, Value& value)
     // Atan2
     case 41:
     {
-        Value v1 = tryGetValue(node->GetBox(0), Value::Zero);
-        Value v2 = tryGetValue(node->GetBox(1), Value::Zero);
+        Value v1 = tryGetValue(node->GetBox(0), 0, Value::Zero);
+        Value v2 = tryGetValue(node->GetBox(1), 1, Value::Zero);
         value = writeFunction2(node, v1, v2, TEXT("atan2"));
         break;
     }