diff --git a/library/text/encoder/tests/test_json_encoder.e b/library/text/encoder/tests/test_json_encoder.e
index df9e02f3..b8e37b3d 100644
--- a/library/text/encoder/tests/test_json_encoder.e
+++ b/library/text/encoder/tests/test_json_encoder.e
@@ -20,6 +20,7 @@ feature -- Test routines
 			testing:  "json-encoded"
 		do
 			test_json_encoded_encoding ({STRING_32}"il était une fois %"Ni & Hao%" (你好) \a\b\c")
+			test_json_encoded_encoding ({STRING_32}" `abc’ ")
 		end
 
 	test_json_encoded_encoding (s: STRING_32)