diff --git a/Sources/JSONParser.swift b/Sources/JSONParser.swift
index 31ddaa9b..6047ca0b 100644
--- a/Sources/JSONParser.swift
+++ b/Sources/JSONParser.swift
@@ -237,6 +237,7 @@ public struct JSONParser {
             switch input[loc] {
             case Literal.BACKSLASH:
                 loc = (loc + 1)
+                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)
diff --git a/Tests/FreddyTests/JSONParserTests.swift b/Tests/FreddyTests/JSONParserTests.swift
index c459acbe..5223bebb 100644
--- a/Tests/FreddyTests/JSONParserTests.swift
+++ b/Tests/FreddyTests/JSONParserTests.swift
@@ -482,4 +482,15 @@ class JSONParserTests: XCTestCase {
             }
         }
     }
+
+    func testThatParserRejectsStringEndingInBackslash() {
+        let invalidJSONString = "[\"\\"
+        do {
+            _ = try JSONParser.parse(invalidJSONString)
+        } catch JSONParser.Error.endOfStreamUnexpected {
+            // do nothing - this is the expected error
+        } catch {
+            XCTFail("Unexpected error: \(error)")
+        }
+    }
 }