diff --git a/toolchains/xslt-M4/converter-gen/supermodel-to-json.xsl b/toolchains/xslt-M4/converter-gen/supermodel-to-json.xsl
index 345124115..81c201080 100644
--- a/toolchains/xslt-M4/converter-gen/supermodel-to-json.xsl
+++ b/toolchains/xslt-M4/converter-gen/supermodel-to-json.xsl
@@ -138,7 +138,6 @@
         <xsl:element name="{(@in-json[matches(.,'\S')],'string')[1]}"
             namespace="http://www.w3.org/2005/xpath-functions">
             <!-- emit a key only if needed -->
-            <xsl:if test="exists(parent::field/child::flag) or exists(parent::field/parent::assembly) or count(parent::field/parent::group[@in-json='SINGLETON_OR_ARRAY']/child::*) eq 1">
                 <xsl:copy-of
                     select="((../flag[@key = $key-flag-name], parent::field[@in-json = 'SCALAR'])/@key, @key)[1]"/>
                 <!-- overriding the key           -->
@@ -148,7 +147,6 @@
                             mode="cast-data"/>
                     </xsl:attribute>
                 </xsl:if>
-            </xsl:if>
             <xsl:apply-templates select="." mode="cast-data"/>
         </xsl:element>
     </xsl:template>