diff --git a/src/SharpIDE.Godot/Features/CodeEditor/SymbolTooltips/Common.cs b/src/SharpIDE.Godot/Features/CodeEditor/SymbolTooltips/Common.cs
index 60ad9b6..191151b 100644
--- a/src/SharpIDE.Godot/Features/CodeEditor/SymbolTooltips/Common.cs
+++ b/src/SharpIDE.Godot/Features/CodeEditor/SymbolTooltips/Common.cs
@@ -357,6 +357,7 @@ public static partial class SymbolInfoComponents
         _ = symbol switch
         {
             {SpecialType: not SpecialType.None} => label.AddSpecialType(symbol),
+            INamedTypeSymbol {OriginalDefinition.SpecialType: SpecialType.System_Nullable_T} nullableValueTypeSymbol => label.AddNullableValueType(nullableValueTypeSymbol),
             INamedTypeSymbol namedTypeSymbol => label.AddNamedType(namedTypeSymbol),
             ITypeParameterSymbol typeParameterSymbol => label.AddTypeParameter(typeParameterSymbol),
             IArrayTypeSymbol arrayTypeSymbol => label.AddArrayType(arrayTypeSymbol),
@@ -409,6 +410,14 @@ public static partial class SymbolInfoComponents
         label.Pop(); // meta
         return label;
     }
+    
+    private static RichTextLabel AddNullableValueType(this RichTextLabel label, INamedTypeSymbol symbol)
+    {
+        var typeArg = symbol.TypeArguments[0];
+        label.AddType(typeArg);
+        label.AddText("?");
+        return label;
+    }
 
     private static RichTextLabel AddTypeParameter(this RichTextLabel label, ITypeParameterSymbol symbol)
     {