diff --git a/servicetalk-concurrent-api-internal/src/main/java/io/servicetalk/concurrent/api/internal/BlockingUtils.java b/servicetalk-concurrent-api-internal/src/main/java/io/servicetalk/concurrent/api/internal/BlockingUtils.java
index ae5b045384..8cf982ae19 100644
--- a/servicetalk-concurrent-api-internal/src/main/java/io/servicetalk/concurrent/api/internal/BlockingUtils.java
+++ b/servicetalk-concurrent-api-internal/src/main/java/io/servicetalk/concurrent/api/internal/BlockingUtils.java
@@ -21,7 +21,7 @@
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 
-import static io.servicetalk.utils.internal.ThrowableUtils.throwException;
+import static io.servicetalk.utils.internal.PlatformDependent.throwException;
 
 /**
  * Common utility functions to unwrap {@link ExecutionException} from async operations.
@@ -50,7 +50,7 @@ public static <T> T futureGetCancelOnInterrupt(Future<T> future) throws Exceptio
             future.cancel(false);
             throw e;
         } catch (ExecutionException e) {
-            return throwException(unwrapExecutionException(e));
+            return throwException(executionExceptionCause(e));
         }
     }
 
@@ -69,7 +69,7 @@ public static <T> T blockingInvocation(Single<T> source) throws Exception {
         try {
             return source.toFuture().get();
         } catch (final ExecutionException e) {
-            return throwException(unwrapExecutionException(e));
+            return throwException(executionExceptionCause(e));
         }
     }
 
@@ -86,31 +86,11 @@ public static void blockingInvocation(Completable source) throws Exception {
         try {
             source.toFuture().get();
         } catch (final ExecutionException e) {
-            throwException(unwrapExecutionException(e));
+            throwException(executionExceptionCause(e));
         }
     }
 
-    private static Throwable unwrapExecutionException(ExecutionException ee) {
-        final Throwable cause = ee.getCause();
-        if (cause == null) {
-            return ee;
-        }
-        cause.addSuppressed(new SuppressedExecutionException(ee));
-        return cause;
-    }
-
-    private static final class SuppressedExecutionException extends ExecutionException {
-        private static final long serialVersionUID = 2001711259056665126L;
-
-        SuppressedExecutionException(final ExecutionException original) {
-            super("Blocking operation terminated with an error");
-            setStackTrace(original.getStackTrace());
-        }
-
-        @Override
-        public synchronized Throwable fillInStackTrace() {
-            // We inherit the stack-trace from the original ExecutionException
-            return this;
-        }
+    private static Throwable executionExceptionCause(ExecutionException original) {
+        return (original.getCause() != null) ? original.getCause() : original;
     }
 }
diff --git a/servicetalk-concurrent-api-internal/src/test/java/io/servicetalk/concurrent/api/internal/BlockingUtilsTest.java b/servicetalk-concurrent-api-internal/src/test/java/io/servicetalk/concurrent/api/internal/BlockingUtilsTest.java
deleted file mode 100644
index 7ed5221f2d..0000000000
--- a/servicetalk-concurrent-api-internal/src/test/java/io/servicetalk/concurrent/api/internal/BlockingUtilsTest.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright © 2022 Apple Inc. and the ServiceTalk project authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package io.servicetalk.concurrent.api.internal;
-
-import io.servicetalk.concurrent.api.Completable;
-import io.servicetalk.concurrent.api.Single;
-import io.servicetalk.concurrent.internal.DeliberateException;
-
-import org.junit.jupiter.api.Test;
-
-import java.util.concurrent.ExecutionException;
-
-import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.Matchers.arrayWithSize;
-import static org.hamcrest.Matchers.emptyArray;
-import static org.hamcrest.Matchers.instanceOf;
-import static org.hamcrest.Matchers.is;
-import static org.hamcrest.Matchers.not;
-import static org.hamcrest.Matchers.sameInstance;
-import static org.junit.jupiter.api.Assertions.assertThrows;
-
-class BlockingUtilsTest {
-
-    @Test
-    void testSingle() {
-        test(t -> BlockingUtils.blockingInvocation(Single.failed(t)));
-    }
-
-    @Test
-    void testCompletable() {
-        test(t -> BlockingUtils.blockingInvocation(Completable.failed(t)));
-    }
-
-    private static void test(BlockingTask blockingTask) {
-        DeliberateException expected = new DeliberateException();
-        DeliberateException e = assertThrows(DeliberateException.class, () -> blockingTask.run(expected));
-        assertThat(e, is(sameInstance(expected)));
-        assertThat(e.getSuppressed(), is(arrayWithSize(1)));
-        Throwable ee = e.getSuppressed()[0];
-        assertThat(ee, is(instanceOf(ExecutionException.class)));
-        assertThat(ee.getStackTrace(), is(not(emptyArray())));
-    }
-
-    @FunctionalInterface
-    private interface BlockingTask {
-        void run(Throwable t) throws Exception;
-    }
-}