diff --git a/source/text/scalc/01/func_countifs.xhp b/source/text/scalc/01/func_countifs.xhp
index 8d57b125ca..9047b8b324 100644
--- a/source/text/scalc/01/func_countifs.xhp
+++ b/source/text/scalc/01/func_countifs.xhp
@@ -44,6 +44,7 @@
 <paragraph id="par_id74301057922522" role="paragraph" xml-lang="en-US"><item type="input">=COUNTIFS(B2:B6;"&gt;=20";C2:C6;"&gt;70")</item></paragraph>
 <paragraph id="par_id109622995127628" role="paragraph" xml-lang="en-US">Counts the amount of rows that contain simultaneously values greater than 70 in the C2:C6 range and values greater than or equal to 20 in the B2:B6 range. Returns 2, because the second, the fifth and the sixth rows do not meet at least one criterion.</paragraph>
 <h4 id="hd_id298462825526166">Using regular expressions and nested functions</h4>
+<paragraph role="paragraph" id="par_id831605805755075">For these examples to work as described, make sure that <emph>Enable regular expressions in formulas</emph> is selected in <switchinline select="sys"><caseinline select="MAC"><menuitem>%PRODUCTNAME > Preferences</menuitem></caseinline><defaultinline><menuitem>Tools > Options</menuitem></defaultinline></switchinline><menuitem> > $[officename] Calc > Calculate</menuitem>.</paragraph>
 <paragraph id="par_id22736248573471" role="paragraph" xml-lang="en-US"><item type="input">=COUNTIFS(B2:B6;"[:alpha:]*")</item></paragraph>
 <paragraph id="par_id22137303324873" role="paragraph" xml-lang="en-US">Counts the amount of rows of the B2:B6 range that contain only alphabet symbols. Returns 1, because only sixth row meets the criterion.</paragraph>
 <paragraph id="par_id82271340221411" role="paragraph" xml-lang="en-US"><item type="input">=COUNTIFS(B2:B6;"&gt;"&amp;MIN(B2:B6);B2:B6;"&lt;"&amp;MAX(B2:B6))</item></paragraph>