diff --git a/eo-parser/src/test/java/org/eolang/parser/XMIRTest.java b/eo-parser/src/test/java/org/eolang/parser/XMIRTest.java
index 7cb2c56090..96218617a6 100644
--- a/eo-parser/src/test/java/org/eolang/parser/XMIRTest.java
+++ b/eo-parser/src/test/java/org/eolang/parser/XMIRTest.java
@@ -127,7 +127,9 @@ void convertsAntlrToEbnf(@TempDir final Path temp) throws Exception {
             Matchers.allOf(
                 Matchers.containsString("<byte> := /[0-9A-F]/ /[0-9A-F]/ \\\\"),
                 Matchers.containsString("<string> := 'DQ' {"),
-                Matchers.containsString("<text> := 'DQ' 'DQ' 'DQ' [")
+                Matchers.containsString("<text> := 'DQ' 'DQ' 'DQ' ["),
+                Matchers.containsString("\"\\textvisiblespace{}\""),
+                Matchers.containsString("\"\\textquotesingle{}\"")
             )
         );
         Files.write(
diff --git a/eo-parser/src/test/resources/org/eolang/parser/ebnf/to-ebnf.xsl b/eo-parser/src/test/resources/org/eolang/parser/ebnf/to-ebnf.xsl
index 42eb5ee14f..dafcbf648e 100644
--- a/eo-parser/src/test/resources/org/eolang/parser/ebnf/to-ebnf.xsl
+++ b/eo-parser/src/test/resources/org/eolang/parser/ebnf/to-ebnf.xsl
@@ -37,7 +37,7 @@ SOFTWARE.
     <xsl:variable name="r8" select="replace($r7, '#', '\\#')"/>
     <xsl:variable name="r9" select="replace($r8, '_', '\\_')"/>
     <xsl:variable name="r10" select="replace($r9, '&quot;', '\\textquotedbl{}')"/>
-    <xsl:variable name="r11" select="replace($r10, '&amp;', '\\textquotesingle{}')"/>
+    <xsl:variable name="r11" select="replace($r10, &quot;'&quot;, '\\textquotesingle{}')"/>
     <xsl:value-of select="$r11"/>
   </xsl:function>
   <xsl:function name="eo:term" as="xs:string">