diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91f783a..391f020 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # jnitrace Change Log
 
+## 2.2.2
+- Bug fix to handle when a DebugSymbol look up has failed for an address.
+
 ## 2.2.1
 - Sorted the alignment of the backtraces so they are right justified
 - Fixed a bug when tracing Release<ArrayType>Elements where all types were assumed to be the size of a pointer
diff --git a/jnitrace/jnitrace.py b/jnitrace/jnitrace.py
index 8e2fb10..87af9b9 100644
--- a/jnitrace/jnitrace.py
+++ b/jnitrace/jnitrace.py
@@ -239,6 +239,8 @@ def _print_args(self, method, args, java_params, data):
 
     @classmethod
     def _create_backtrace_symbol(cls, module_name, symbol_name):
+        if not symbol_name:
+            return "unknown"
         if "+" not in symbol_name:
             return module_name + "!" + symbol_name
         return symbol_name
diff --git a/package.json b/package.json
index 1b4d56a..5a0df61 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jnitrace",
-  "version": "2.2.1",
+  "version": "2.2.2",
   "description": "A tool for tracing use of the JNI in Android apps",
   "private": true,
   "main": "jnitrace/src/main.js",
diff --git a/setup.py b/setup.py
index 7050fd2..0fb983f 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
 
 setup(
     name='jnitrace',
-    version='2.2.1',
+    version='2.2.2',
     description='A tool for tracing use of the JNI in Android apps',
     long_description=long_description,
     long_description_content_type='text/markdown',