diff --git a/telegram/formatter/formatter.go b/telegram/formatter/formatter.go
index 6da8256..a8c94a0 100644
--- a/telegram/formatter/formatter.go
+++ b/telegram/formatter/formatter.go
@@ -40,8 +40,8 @@ var italicRunes = []rune("_")
 var strikeRunesMarkdown = []rune("~~")
 var strikeRunesXEP0393 = []rune("~")
 var codeRunes = []rune("`")
-var preRuneStart = []rune("```\n")
-var preRuneEnd = []rune("\n```")
+var preRunesStart = []rune("```\n")
+var preRunesEnd = []rune("\n```")
 var quoteRunes = []rune("> ")
 var newlineRunes = []rune("\n")
 var doubleNewlineRunes = []rune("\n\n")
@@ -270,10 +270,10 @@ func entityToMarkdown(entity *client.TextEntity, doubledRunes []rune, markupMode
 	case client.TypeTextEntityTypeCode:
 		return markupBraces(entity, codeRunes, codeRunes)
 	case client.TypeTextEntityTypePre:
-		return markupBraces(entity, preRuneStart, preRuneEnd)
+		return markupBraces(entity, preRunesStart, preRunesEnd)
 	case client.TypeTextEntityTypePreCode:
 		preCode, _ := entity.Type.(*client.TextEntityTypePreCode)
-		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), codeRunes)
+		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), preRunesEnd)
 	case client.TypeTextEntityTypeBlockQuote:
 		return quotePrependNewlines(entity, doubledRunes, MarkupModeMarkdown)
 	case client.TypeTextEntityTypeTextUrl:
@@ -300,10 +300,10 @@ func entityToXEP0393(entity *client.TextEntity, doubledRunes []rune, markupMode
 	case client.TypeTextEntityTypeCode:
 		return markupBraces(entity, codeRunes, codeRunes)
 	case client.TypeTextEntityTypePre:
-		return markupBraces(entity, preRuneStart, preRuneEnd)
+		return markupBraces(entity, preRunesStart, preRunesEnd)
 	case client.TypeTextEntityTypePreCode:
 		preCode, _ := entity.Type.(*client.TextEntityTypePreCode)
-		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), codeRunes)
+		return markupBraces(entity, []rune("\n```"+preCode.Language+"\n"), preRunesEnd)
 	case client.TypeTextEntityTypeBlockQuote:
 		return quotePrependNewlines(entity, doubledRunes, MarkupModeXEP0393)
 	case client.TypeTextEntityTypeTextUrl: