diff --git a/modules/titling.xml b/modules/titling.xml
index 502404a..bf23de4 100644
--- a/modules/titling.xml
+++ b/modules/titling.xml
@@ -59,7 +59,9 @@
 					</xsl:choose>
 				</xsl:if>
 				<xsl:call-template name="PaperCode" />
+				<xsl:text> </xsl:text>
 				<xsl:value-of select="concat( upper-case( substring( /document/@class, 1, 1 ) ), substring( /document/@class, 2 ) ) " />
+				<xsl:text> </xsl:text>
 				<xsl:value-of select="/document/@sequence-number" />
 				<!-- If the title's empty, there's no point in including the ": ". -->
 				<xsl:if test="node()">
@@ -139,7 +141,9 @@
 						</xsl:choose>
 					</xsl:if>
 					<xsl:call-template name="PaperCode" />
+					<xsl:text> </xsl:text>
 					<xsl:value-of select="concat( upper-case( substring( /document/@class, 1, 1 ) ), substring( /document/@class, 2 ) ) " />
+					<xsl:text> </xsl:text>
 					<xsl:value-of select="/document/@sequence-number" />
 					<!-- If the title's empty, there's no point in including the ": ". -->
 					<xsl:if test="node()">