diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2a55f26..96aab02c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 ## Fixed
 
 - Fix beholder watch functionality that would cause a NullPointerException earlier.
+- Resolve reflective calls in profiling plugin.
 
 ## Changed
 
diff --git a/src/kaocha/plugin/profiling.clj b/src/kaocha/plugin/profiling.clj
index ba8b3428..2c33fc6f 100644
--- a/src/kaocha/plugin/profiling.clj
+++ b/src/kaocha/plugin/profiling.clj
@@ -7,6 +7,8 @@
   (:import java.time.Instant
            java.time.temporal.ChronoUnit))
 
+(set! *warn-on-reflection* true)
+
 (spec/def ::start #(instance? Instant %))
 (spec/def ::duration nat-int?)
 (spec/def ::profiling? boolean?)
@@ -18,7 +20,7 @@
 (defn stop [testable]
   (cond-> testable
     (::start testable)
-    (assoc ::duration (.until (::start testable)
+    (assoc ::duration (.until ^Instant (::start testable)
                               (Instant/now)
                               ChronoUnit/NANOS))))