diff --git a/sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSampler.java b/sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSampler.java
index dcc54916372..e88913c194d 100644
--- a/sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSampler.java
+++ b/sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSampler.java
@@ -44,4 +44,9 @@ public SamplingIntent getSamplingIntent(
   public String getDescription() {
     return description;
   }
+
+  @Override
+  public String toString() {
+    return getDescription();
+  }
 }
diff --git a/sdk-extensions/incubator/src/test/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSamplerTest.java b/sdk-extensions/incubator/src/test/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSamplerTest.java
index 9a719844449..8dba73e7c98 100644
--- a/sdk-extensions/incubator/src/test/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSamplerTest.java
+++ b/sdk-extensions/incubator/src/test/java/io/opentelemetry/sdk/extension/incubator/trace/samplers/ComposableAnnotatingSamplerTest.java
@@ -32,6 +32,22 @@ void testDescription() {
             "ComposableAnnotatingSampler{ComposableAlwaysOnSampler,{http.route=\"/bear\", size=100}}");
   }
 
+  @Test
+  void descriptionInComposedSampler() {
+    // The annotating sampler must override toString() so that samplers composing it (which build
+    // their description by concatenating the nested sampler) surface its real description instead
+    // of
+    // an Object hash.
+    String description =
+        ComposableSampler.parentThreshold(
+                ComposableSampler.annotating(ComposableSampler.alwaysOn(), Attributes.empty()))
+            .getDescription();
+    assertThat(description)
+        .isEqualTo(
+            "ComposableParentThresholdSampler{rootSampler=ComposableAnnotatingSampler{ComposableAlwaysOnSampler,{}}}");
+    assertThat(description).doesNotContain("@");
+  }
+
   @Test
   void setsAttributes() {
     SamplingIntent intent =