Getting 'invalid syntax' after an else statement

Not sure why I'm getting a syntax error here. After the indented portion of the else statement the next line of code is receiving 'invalid syntax'.

    if np.min(x_values) < 0 and np.max(x_values) > 0:
        value_range = np.abs(np.min(x_values)) + np.abs(np.max(x_values))
    elif np.min(x_values) < 0 and np.max(x_values) <= 0:
        value_range = np.abs(np.min(x_values)) - np.abs(np.max(x_values))
    else:
        value_range = np.abs(np.max(x_values) - np.abs(np.min(x_values))

    step_size = value_range / step_size