diff --git a/http/interceptor.go b/http/interceptor.go
index 06d765635..0fa9febab 100644
--- a/http/interceptor.go
+++ b/http/interceptor.go
@@ -83,7 +83,11 @@ func (i *rwInterceptor) Write(b []byte) (int, error) {
 		// if there is an interruption it must be from at least phase 4 and hence
 		// WriteHeader or Write should have been called and hence the status code
 		// has been flushed to the delegated response writer.
-		return 0, nil
+		//
+		// We return the number of bytes as according to the interface io.Writer
+		// if we don't return an error, the number of bytes written is len(p).
+		// See https://pkg.go.dev/io#Writer
+		return len(b), nil
 	}
 
 	if !i.wroteHeader {
@@ -102,7 +106,10 @@ func (i *rwInterceptor) Write(b []byte) (int, error) {
 			i.overrideWriteHeader(obtainStatusCodeFromInterruptionOrDefault(it, i.statusCode))
 			// We only flush the status code after an interruption.
 			i.flushWriteHeader()
-			return 0, nil
+			// We return the number of bytes as according to the interface io.Writer
+			// if we don't return an error, the number of bytes written is len(p).
+			// See https://pkg.go.dev/io#Writer
+			return len(b), nil
 		}
 		return n, err
 	}