diff --git a/contrib/refund/src/refund_json.nit b/contrib/refund/src/refund_json.nit
index a049b5d9bc..5be7b05afb 100644
--- a/contrib/refund/src/refund_json.nit
+++ b/contrib/refund/src/refund_json.nit
@@ -90,6 +90,7 @@ redef class RefundProcessor
 	fun write_output(str: String, file: String) do
 		var ofs = new FileWriter.open(file)
 		ofs.write(str)
+		ofs.write("\n")
 		ofs.close
 	end
 
diff --git a/contrib/refund/tests/res/json_error1.res b/contrib/refund/tests/res/json_error1.res
index 958aa8db6c..e7eb308d82 100644
--- a/contrib/refund/tests/res/json_error1.res
+++ b/contrib/refund/tests/res/json_error1.res
@@ -1,3 +1,3 @@
 {
-	"message": "Wrong input file (Unexpected Eof; is acceptable instead: value)"
+	"message": "Wrong input file (Empty JSON)"
 }
diff --git a/contrib/refund/tests/res/json_error3.res b/contrib/refund/tests/res/json_error3.res
index d35b98219a..83de0af287 100644
--- a/contrib/refund/tests/res/json_error3.res
+++ b/contrib/refund/tests/res/json_error3.res
@@ -1,3 +1,3 @@
 {
-	"message": "Wrong input file (Unexpected Eof; is acceptable instead: members, pair)"
+	"message": "Wrong input file (Malformed JSON object)"
 }