diff --git a/app/node/value.cpp b/app/node/value.cpp
index d103b1973..5b1355451 100644
--- a/app/node/value.cpp
+++ b/app/node/value.cpp
@@ -34,10 +34,6 @@
 
 namespace olive {
 
-const QVector<NodeValue::Type> NodeValue::kNumber = {kFloat, kInt, kRational};
-const QVector<NodeValue::Type> NodeValue::kBuffer = {kTexture, kSamples};
-const QVector<NodeValue::Type> NodeValue::kVector = {kVec2, kVec3, kVec4};
-
 QString NodeValue::ValueToString(Type data_type, const QVariant &value, bool value_is_a_key_track)
 {
   if (!value_is_a_key_track && data_type == kVec2) {
diff --git a/app/node/value.h b/app/node/value.h
index 345b7ed4d..49f977ad0 100644
--- a/app/node/value.h
+++ b/app/node/value.h
@@ -184,10 +184,6 @@ public:
     kDataTypeCount
   };
 
-  static const QVector<Type> kNumber;
-  static const QVector<Type> kBuffer;
-  static const QVector<Type> kVector;
-
   NodeValue() :
     type_(kNone),
     from_(nullptr),
@@ -295,12 +291,22 @@ public:
 
   static bool type_is_numeric(NodeValue::Type type)
   {
-    return kNumber.contains(type);
+    return type == kFloat
+        || type == kInt
+        || type == kRational;
   }
 
   static bool type_is_vector(NodeValue::Type type)
   {
-    return kVector.contains(type);
+    return type == kVec2
+        || type == kVec3
+        || type == kVec4;
+  }
+
+  static bool type_is_buffer(NodeValue::Type type)
+  {
+    return type == kTexture
+        || type == kSamples;
   }
 
   static int get_number_of_keyframe_tracks(Type type);