diff --git a/cap2/pipeline/short_read/humann2.py b/cap2/pipeline/short_read/humann2.py
index 39e2460..fc8dc20 100644
--- a/cap2/pipeline/short_read/humann2.py
+++ b/cap2/pipeline/short_read/humann2.py
@@ -98,7 +98,7 @@ def __init__(self, *args, **kwargs):
         self.alignment = MicaUniref90.from_cap_task(self)
 
     def tool_version(self):
-        return self.run_cmd(f'{self.pkg.bin} --version').stderr.decode('utf-8')
+        return self.run_cmd(f'{self.humann.bin} --version').stderr.decode('utf-8')
 
     def requires(self):
         return self.humann, self.alignment, self.db