diff --git a/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/pageload-updateSpanName/test.ts b/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/pageload-updateSpanName/test.ts
index 0ee7a634717f..b62585b2f881 100644
--- a/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/pageload-updateSpanName/test.ts
+++ b/dev-packages/browser-integration-tests/suites/tracing/browserTracingIntegration/pageload-updateSpanName/test.ts
@@ -34,7 +34,7 @@ sentryTest(
       [SENTRY_OP]: { type: 'string', value: 'pageload' },
     });
 
-    expect(attributes[SEMANTIC_ATTRIBUTE_SENTRY_CUSTOM_SPAN_NAME]).toEqual({ type: 'string', value: 'new name' });
+    expect(attributes[SEMANTIC_ATTRIBUTE_SENTRY_CUSTOM_SPAN_NAME]).toBeUndefined();
 
     expect(pageloadSpan.name).toBe('new name');
 
diff --git a/packages/core/src/tracing/spans/captureSpan.ts b/packages/core/src/tracing/spans/captureSpan.ts
index 60a68697ae58..886f0d95cc0e 100644
--- a/packages/core/src/tracing/spans/captureSpan.ts
+++ b/packages/core/src/tracing/spans/captureSpan.ts
@@ -1,6 +1,7 @@
 import type { RawAttributes } from '../../attributes';
 import type { Client } from '../../client';
 import type { ScopeData } from '../../scope';
+import { SEMANTIC_ATTRIBUTE_SENTRY_CUSTOM_SPAN_NAME } from '../../semanticAttributes';
 import type { SerializedStreamedSpan, Span, SpanAttributeValue, SpanJSON, StreamedSpanJSON } from '../../types/span';
 import { getCombinedScopeData } from '../../utils/scopeData';
 import {
@@ -45,6 +46,10 @@ export type SerializedStreamedSpanWithSegmentSpan = SerializedStreamedSpan & {
 export function captureSpan(span: Span, client: Client): SerializedStreamedSpanWithSegmentSpan {
   // Convert to JSON FIRST - we cannot write to an already-ended span
   const spanJSON = spanToJSON(span);
+  if (spanJSON.attributes) {
+    // oxlint-disable-next-line typescript/no-dynamic-delete
+    delete spanJSON.attributes[SEMANTIC_ATTRIBUTE_SENTRY_CUSTOM_SPAN_NAME];
+  }
 
   const segmentSpan = INTERNAL_getSegmentSpan(span);
   const serializedSegmentSpan = spanToJSON(segmentSpan);