diff --git a/bin/codeclimate-checkstyle b/bin/codeclimate-checkstyle
index 8958780..e87147a 100755
--- a/bin/codeclimate-checkstyle
+++ b/bin/codeclimate-checkstyle
@@ -7,10 +7,13 @@ $:.unshift(File.expand_path("../lib", File.dirname(__FILE__)))
 
 require "cc/engine/checkstyle"
 
-if File.exist?("/config.json")
-  engine_config = JSON.parse(File.read("/config.json"))
+config_file = ARGV[0] || "/config.json"
+
+if File.exist?(config_file)
+  engine_config = JSON.parse(File.read(config_file))
 else
   engine_config = {}
 end
 
 CC::Engine::Checkstyle.new("/code", engine_config, STDOUT).run
+exit($?.exitstatus)
diff --git a/fixtures/Main.java b/fixtures/default/Main.java
similarity index 100%
rename from fixtures/Main.java
rename to fixtures/default/Main.java
diff --git a/fixtures/default/config.json b/fixtures/default/config.json
new file mode 100644
index 0000000..41c1852
--- /dev/null
+++ b/fixtures/default/config.json
@@ -0,0 +1,6 @@
+{
+  "enabled": true,
+  "include_paths": [
+    "/usr/src/app/fixtures/default/Main.java"
+  ]
+}
diff --git a/fixtures/not_parseable/Template.java b/fixtures/not_parseable/Template.java
new file mode 100644
index 0000000..8098a97
--- /dev/null
+++ b/fixtures/not_parseable/Template.java
@@ -0,0 +1,31 @@
+/*
+ * Generated by Mavanagaiata ${MAVANAGAIATA_VERSION} at ${TIMESTAMP}
+ */
+
+package ${PACKAGE_NAME};
+
+public final class ${CLASS_NAME} {
+
+    public static final String BRANCH = "${BRANCH}";
+
+    public static final String COMMIT_ABBREV = "${COMMIT_ABBREV}";
+
+    public static final String COMMIT_SHA = "${COMMIT_SHA}";
+
+    public static final String DESCRIBE = "${DESCRIBE}";
+
+    public static final boolean DIRTY = ${DIRTY};
+
+    public static final String TAG = "${TAG_NAME}";
+
+    public static final String VERSION = "${VERSION}";
+
+    public static String getVersion() {
+        if (TAG.equals(VERSION) && TAG.equals(DESCRIBE)) {
+            return TAG;
+        }
+
+        return String.format("%s (%s)", VERSION, DESCRIBE);
+    }
+
+}
diff --git a/fixtures/not_parseable/config.json b/fixtures/not_parseable/config.json
new file mode 100644
index 0000000..94f8a2c
--- /dev/null
+++ b/fixtures/not_parseable/config.json
@@ -0,0 +1,6 @@
+{
+  "enabled": true,
+  "include_paths": [
+    "/usr/src/app/fixtures/not_parseable/Template.java"
+  ]
+}
diff --git a/spec/lib/cc/engine/checkstyle_spec.rb b/spec/lib/cc/engine/checkstyle_spec.rb
index bb20d65..19ffa45 100644
--- a/spec/lib/cc/engine/checkstyle_spec.rb
+++ b/spec/lib/cc/engine/checkstyle_spec.rb
@@ -18,27 +18,27 @@ module Engine
       end
 
       it "uses default config" do
-        run_with("include_paths" => ["fixtures/Main.java"])
+        run_with("include_paths" => ["fixtures/default/Main.java"])
       end
 
       it "accepts config path" do
         run_with(
           "config" => "config/codeclimate_checkstyle.xml",
-          "include_paths" => ["fixtures/Main.java"],
+          "include_paths" => ["fixtures/default/Main.java"],
         )
       end
 
       it "accepts config hash" do
         run_with(
           "config" => { "file" => "config/codeclimate_checkstyle.xml" },
-          "include_paths" => ["fixtures/Main.java"],
+          "include_paths" => ["fixtures/default/Main.java"],
         )
       end
 
       it "accepts config hash without file" do
         run_with(
           "config" => { "key" => "value" },
-          "include_paths" => ["fixtures/Main.java"],
+          "include_paths" => ["fixtures/default/Main.java"],
         )
       end
 
diff --git a/spec/sanity_check_spec.rb b/spec/sanity_check_spec.rb
index c9a5a09..401d6cc 100644
--- a/spec/sanity_check_spec.rb
+++ b/spec/sanity_check_spec.rb
@@ -2,10 +2,18 @@
 
 describe "Sanity Check" do
   it "executes successfully with default config" do
-    pid, _, out, err = POSIX::Spawn.popen4("/usr/src/app/bin/codeclimate-checkstyle")
+    pid, _, out, err = POSIX::Spawn.popen4("/usr/src/app/bin/codeclimate-checkstyle", "/usr/src/app/fixtures/default/config.json")
     _, status = Process::waitpid2(pid)
 
     expect(status.exitstatus).to eq(0)
     expect(err.read).to be_empty
   end
+
+  it "forwards exit code" do
+    pid, _, out, err = POSIX::Spawn.popen4("/usr/src/app/bin/codeclimate-checkstyle", "/usr/src/app/fixtures/not_parseable/config.json")
+    _, status = Process::waitpid2(pid)
+
+    expect(status.exitstatus).to_not eq(0)
+    expect(err.read).to_not be_empty
+  end
 end

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