diff --git a/yli/sig_tests.py b/yli/sig_tests.py
index 203ca27..1535b36 100644
--- a/yli/sig_tests.py
+++ b/yli/sig_tests.py
@@ -306,6 +306,10 @@ def mannwhitney(df, dep, ind, *, nan_policy='warn', brunnermunzel=True, use_cont
 	:param alternative: See *scipy.stats.mannwhitneyu*
 	:param method: See *scipy.stats.mannwhitneyu*
 	
+	:return: The result of the Mann–Whitney test.
+	The result of a Brunner–Munzel test is included in the result object if and only if *brunnermunzel* is *True*,
+	*and* the Mann–Whitney test is significant, *and* the Brunner–Munzel test is non-significant.
+	
 	:rtype: :class:`yli.sig_tests.MannWhitneyResult`
 	
 	**Example:**