diff --git a/i18n/en-gb.json b/i18n/en-gb.json
index 6c7d8b8e..b06305c2 100644
--- a/i18n/en-gb.json
+++ b/i18n/en-gb.json
@@ -1,9 +1,11 @@
 {
 	"@metadata": {
 		"authors": [
+			"Robin Owain",
 			"Shirayuki"
 		]
 	},
 	"pfunc_expr_unrecognised_word": "Expression error: Unrecognised word \"$1\".",
+	"pfunc_expr_missing_operand": "Gwall mynegiad: Operand ar gyfer $1 ar goll.",
 	"pfunc_expr_unrecognised_punctuation": "Expression error: Unrecognised punctuation character \"$1\"."
 }
diff --git a/i18n/io.json b/i18n/io.json
index dd226cca..8dffac39 100644
--- a/i18n/io.json
+++ b/i18n/io.json
@@ -10,5 +10,6 @@
 	"pfunc_expr_unexpected_operator": "Eroro en la frazo: Neexpektata $1 operacero.",
 	"pfunc_expr_missing_operand": "Eroro en la frazo: Mankas operando por $1.",
 	"pfunc_expr_unrecognised_punctuation": "Frazala eroro: Nekonocita puntizosigno “$1”.",
+	"pfunc_expr_unclosed_bracket": "Eroro en expresado: Krampono apertita.",
 	"pfunc_expr_division_by_zero": "Divido per zero"
 }