diff --git a/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-core.xsl b/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-core.xsl
index daca1b8fa18..ed6a811ecf9 100644
--- a/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-core.xsl
+++ b/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-core.xsl
@@ -275,9 +275,15 @@
                       |mri:otherLocale
                       |mdb:defaultLocale
                       |mdb:otherLocale">
+    <xsl:variable name="languageValue"
+                  as="xs:string?"
+                  select="if ($isoToDcatLanguage[@key = current()/*/lan:language/*/@codeListValue])
+                          then $isoToDcatLanguage[@key = current()/*/lan:language/*/@codeListValue]
+                          else */lan:language/*/@codeListValue"/>
+
     <dct:language>
       <!-- TO CHECK: In DCAT, maybe we should use another base URI? -->
-      <dct:LinguisticSystem rdf:about="{concat($europaPublicationLanguage, upper-case(*/lan:language/*/@codeListValue))}"/>
+      <dct:LinguisticSystem rdf:about="{concat($europaPublicationLanguage, upper-case($languageValue))}"/>
     </dct:language>
   </xsl:template>
 
diff --git a/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-variables.xsl b/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-variables.xsl
index ae584706bab..037b7f530e8 100644
--- a/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-variables.xsl
+++ b/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter/dcat/dcat-variables.xsl
@@ -203,4 +203,18 @@
     <entry key="https://publications.europa.eu/resource/authority/file-type/GML">wps</entry>
     <entry key="https://publications.europa.eu/resource/authority/file-type/ZIP">zip</entry>
   </xsl:variable>
+
+  <!-- DCAT uses the terminology code, while ISO uses bibliographic code.
+       For some languages like Dutch, French or German the values differ. -->
+  <xsl:variable name="isoToDcatLanguage"
+                as="node()*">
+    <entry key="dut">nld</entry> <!-- Dutch -->
+    <entry key="cze">ces</entry> <!-- Czech -->
+    <entry key="ger">deu</entry> <!-- German -->
+    <entry key="gre">ell</entry> <!-- Greek -->
+    <entry key="fre">fra</entry> <!-- French -->
+    <entry key="rum">ron</entry> <!-- Romanian -->
+    <entry key="slo">slk</entry> <!-- Slovak -->
+    <entry key="ice">isl</entry> <!-- Icelandic-->
+  </xsl:variable>
 </xsl:stylesheet>