diff --git a/Bonsai.Core/Expressions/ExpressionBuilder.cs b/Bonsai.Core/Expressions/ExpressionBuilder.cs
index c71691dc..126b9974 100644
--- a/Bonsai.Core/Expressions/ExpressionBuilder.cs
+++ b/Bonsai.Core/Expressions/ExpressionBuilder.cs
@@ -819,7 +819,9 @@ static CallCandidate OverloadResolution(IEnumerable<MethodBase> methods, params
                     return new CallCandidate
                     {
                         method = method,
-                        declaringType = method.DeclaringType,
+                        declaringType = method.IsVirtual
+                            ? ((MethodInfo)method).GetBaseDefinition().DeclaringType
+                            : method.DeclaringType,
                         arguments = callArguments,
                         generic = method.IsGenericMethod,
                         expansion = ParamExpansionRequired(parameters, argumentTypes),