e43162
@@ -668,7 +668,7 @@
public class MethodParameter {
 
 	private static int validateIndex(Executable executable, int parameterIndex) {
 		int count = executable.getParameterCount();
-		Assert.isTrue(parameterIndex < count, () -> "Parameter index needs to be between 0 and " + (count - 1));
+		Assert.isTrue(parameterIndex < count, () -> "Parameter index needs to be between -1 and " + (count - 1));
 		return parameterIndex;
 	}
 
