diff --git a/Packages/com.unity.shadergraph/Editor/Data/Graphs/DynamicVectorMaterialSlot.cs b/Packages/com.unity.shadergraph/Editor/Data/Graphs/DynamicVectorMaterialSlot.cs
index ad0674e1ba7..5ca8f2d1141 100644
--- a/Packages/com.unity.shadergraph/Editor/Data/Graphs/DynamicVectorMaterialSlot.cs
+++ b/Packages/com.unity.shadergraph/Editor/Data/Graphs/DynamicVectorMaterialSlot.cs
@@ -84,7 +84,7 @@ protected override string ConcreteSlotValueAsVariable()
             var channelCount = SlotValueHelper.GetChannelCount(concreteValueType);
             string values = NodeUtils.FloatToShaderValue(value.x);
             if (channelCount == 1)
-                return values;
+                return string.Format("$precision({0})", values);
             for (var i = 1; i < channelCount; i++)
                 values += ", " + NodeUtils.FloatToShaderValue(value[i]);
             return string.Format("$precision{0}({1})", channelCount, values);
diff --git a/Packages/com.unity.shadergraph/Editor/Data/Graphs/Vector1MaterialSlot.cs b/Packages/com.unity.shadergraph/Editor/Data/Graphs/Vector1MaterialSlot.cs
index 69588881abf..d3be40d45b0 100644
--- a/Packages/com.unity.shadergraph/Editor/Data/Graphs/Vector1MaterialSlot.cs
+++ b/Packages/com.unity.shadergraph/Editor/Data/Graphs/Vector1MaterialSlot.cs
@@ -69,7 +69,7 @@ public override VisualElement InstantiateControl()
 
         protected override string ConcreteSlotValueAsVariable()
         {
-            return NodeUtils.FloatToShaderValue(value);
+            return string.Format("$precision({0})", NodeUtils.FloatToShaderValue(value));
         }
 
         public override void AddDefaultProperty(PropertyCollector properties, GenerationMode generationMode)
diff --git a/Packages/com.unity.shadergraph/Tests/Editor/UnitTests/MaterialSlotTests.cs b/Packages/com.unity.shadergraph/Tests/Editor/UnitTests/MaterialSlotTests.cs
index 53395d6abcd..01b17296242 100644
--- a/Packages/com.unity.shadergraph/Tests/Editor/UnitTests/MaterialSlotTests.cs
+++ b/Packages/com.unity.shadergraph/Tests/Editor/UnitTests/MaterialSlotTests.cs
@@ -103,8 +103,8 @@ public void MaterialSlotReturnsValidDefaultValue()
             Assert.AreEqual(expected, result);
 
             m_NodeA.slot1.value = 6;
-            result = m_NodeA.slot1.GetDefaultValue(GenerationMode.ForReals);
-            Assert.AreEqual("6", result);
+            result = m_NodeA.slot1.GetDefaultValue(GenerationMode.ForReals, ConcretePrecision.Half);
+            Assert.AreEqual("half(6)", result);
 
             m_NodeA.slot2.value = new Vector4(6, 6, 6, 1);
             result = m_NodeA.slot2.GetDefaultValue(GenerationMode.ForReals, ConcretePrecision.Half);