diff --git a/rs-e2e/src/main/resources/assertion_definitions.json b/rs-e2e/src/main/resources/assertion_definitions.json
index 8186c9eae..88323d3d8 100644
--- a/rs-e2e/src/main/resources/assertion_definitions.json
+++ b/rs-e2e/src/main/resources/assertion_definitions.json
@@ -89,7 +89,7 @@
         "MSH-10 = '008'"
       ],
       "rules": [
-        "OBX-6 = 'µmol'"
+        "OBX-6 = 'µmol/L'"
       ]
     }
   ]