diff --git a/httpcore5-h2/src/main/java/org/apache/hc/core5/http2/impl/nio/PrefaceHandlerBase.java b/httpcore5-h2/src/main/java/org/apache/hc/core5/http2/impl/nio/PrefaceHandlerBase.java
index 3a5912b47..c967699dc 100644
--- a/httpcore5-h2/src/main/java/org/apache/hc/core5/http2/impl/nio/PrefaceHandlerBase.java
+++ b/httpcore5-h2/src/main/java/org/apache/hc/core5/http2/impl/nio/PrefaceHandlerBase.java
@@ -96,9 +96,6 @@ public void exception(final IOSession session, final Exception cause) {
                 protocolHandler.exception(session, cause);
             } else {
                 CommandSupport.failCommands(session, cause);
-                if (exceptionCallback != null) {
-                    exceptionCallback.execute(cause);
-                }
             }
         } catch (final Exception ex) {
             if (completed.compareAndSet(false, true) && resultCallback != null) {