diff --git a/plugins/groovy/testdata/highlighting/IncorrectEscaping.groovy b/plugins/groovy/testdata/highlighting/IncorrectEscaping.groovy
index e31518de0622..f578bc6b9af4 100644
--- a/plugins/groovy/testdata/highlighting/IncorrectEscaping.groovy
+++ b/plugins/groovy/testdata/highlighting/IncorrectEscaping.groovy
@@ -14,5 +14,7 @@ print "dfg\$fg"
 print 'fg\$fg'
 print (<error descr="Illegal escape character in string literal">/abc\n\r\y\o \u12 /</error>)
 print (/abc\n\r\y\o \u1234 /)
+print '\123\123'
+print '\198'
 print """\n${x}\"""
 <EOLError descr="String end expected"></EOLError>
\ No newline at end of file