diff --git a/spec/helper/spec_helper.py b/spec/helper/spec_helper.py
index 3079296..c31692e 100644
--- a/spec/helper/spec_helper.py
+++ b/spec/helper/spec_helper.py
@@ -104,3 +104,4 @@ def kill_xvnc():
 
     run_cmd('vncserver -kill :1', print_stderr=False)
     running_xvnc = False
+    clean_locks()
diff --git a/spec/vncserver_benchmarking_spec.py b/spec/vncserver_benchmarking_spec.py
index 1cb59b1..a6bb26a 100644
--- a/spec/vncserver_benchmarking_spec.py
+++ b/spec/vncserver_benchmarking_spec.py
@@ -1,6 +1,6 @@
 from mamba import description, context, it, fit, before, after
 from expects import expect, equal, contain, match
-from helper.spec_helper import run_cmd, clean_env, kill_xvnc
+from helper.spec_helper import run_cmd, clean_env, kill_xvnc, clean_locks
 
 with description("Benchmarking"):
     with before.each:
@@ -9,4 +9,5 @@ with description("Benchmarking"):
         kill_xvnc()
     with it("runs benchmarks"):
         completed_process = run_cmd("Xvnc -interface 0.0.0.0 :1 -selfBench")
-        expect(completed_process.returncode).to(equal(0))
+        clean_locks()
+        expect(completed_process.returncode).to(equal(0))
\ No newline at end of file