diff --git a/Sources/JSONParser.swift b/Sources/JSONParser.swift
index 7da25928..6047ca0b 100644
--- a/Sources/JSONParser.swift
+++ b/Sources/JSONParser.swift
@@ -237,7 +237,7 @@ public struct JSONParser {
             switch input[loc] {
             case Literal.BACKSLASH:
                 loc = (loc + 1)
-                if loc >= input.count { continue }
+                guard loc < input.count else { continue }
                 switch input[loc] {
                 case Literal.DOUBLE_QUOTE: stringDecodingBuffer.append(Literal.DOUBLE_QUOTE)
                 case Literal.BACKSLASH:    stringDecodingBuffer.append(Literal.BACKSLASH)