diff --git a/src/rgen/Microsoft.Macios.Generator/Extensions/TypeSymbolExtensions.Core.cs b/src/rgen/Microsoft.Macios.Generator/Extensions/TypeSymbolExtensions.Core.cs
index c828aa73f71..906fe749444 100644
--- a/src/rgen/Microsoft.Macios.Generator/Extensions/TypeSymbolExtensions.Core.cs
+++ b/src/rgen/Microsoft.Macios.Generator/Extensions/TypeSymbolExtensions.Core.cs
@@ -366,7 +366,7 @@ static void GetValueTypeSize (this ITypeSymbol originalSymbol, ITypeSymbol type,
 	}
 
 	/// <summary>
-	/// Return the size oa a blittable structure that can be used in a PInvoke
+	/// Return the size of a blittable structure that can be used in a PInvoke
 	/// </summary>
 	/// <param name="type">The type symbol whose size we want to get.</param>
 	/// <param name="fieldTypes">The fileds of the struct.</param>