diff --git a/bin/xymon-vulnerabilities.py b/bin/xymon-vulnerabilities.py
index 50f9cddb48dd0c69c94d561607bb214079b54aed..518eb115e037c1ea988001997ee11d33e6e0a89c 100755
--- a/bin/xymon-vulnerabilities.py
+++ b/bin/xymon-vulnerabilities.py
@@ -32,7 +32,7 @@ def run_check(xymon):
         title = ''.join([vuln, ': '])
         vuln_file = Path(''.join([cpu_vulnerabilities_base, vuln]))
         if vuln_file.is_file():
-            with open(vuln_file) as f:
+            with open(str(vuln_file)) as f:
                 content = '<br/>'.join(f.readlines())
             if content.startswith('Vulnerable'):
                 title += 'Vulnerable'