diff --git a/python/ql/lib/semmle/python/security/dataflow/TarSlipQuery.qll b/python/ql/lib/semmle/python/security/dataflow/TarSlipQuery.qll
index e69d63fedbc..6cf41742a66 100644
--- a/python/ql/lib/semmle/python/security/dataflow/TarSlipQuery.qll
+++ b/python/ql/lib/semmle/python/security/dataflow/TarSlipQuery.qll
@@ -22,8 +22,4 @@ class Configuration extends TaintTracking::Configuration {
   override predicate isSink(DataFlow::Node sink) { sink instanceof Sink }
 
   override predicate isSanitizer(DataFlow::Node node) { node instanceof Sanitizer }
-
-  deprecated override predicate isSanitizerGuard(DataFlow::BarrierGuard guard) {
-    guard instanceof SanitizerGuard
-  }
 }