diff --git a/ChangeLogAtm.md b/ChangeLogAtm.md
index 06ff9b3b6d499..494d741c82412 100644
--- a/ChangeLogAtm.md
+++ b/ChangeLogAtm.md
@@ -1,3 +1,4 @@
+- FIX : Doc preview (magnifier/loupe) on shipments (BL) in thirdparty card (client/prospect tab) - use 'expedition' modulepart instead of $sendingstatic->element ('shipping') in comm/card.php - PR #755 - *2026-07-09*
 - FIX : BACKPORT pour SENTRY : add null check before setting _renderItem on jQuery UI autocomplete widget #37597
 - NEW : Add complete_substitutions_array in ticket.class.php - *2026-02-20*
 - FIX : DA027856 - Edition des extrafields "always editable" sur les projets avec une tache ouverte en bas de page.
diff --git a/htdocs/comm/card.php b/htdocs/comm/card.php
index df35900a1a5bf..8ba9ec0dcdc8a 100644
--- a/htdocs/comm/card.php
+++ b/htdocs/comm/card.php
@@ -1170,7 +1170,11 @@
 					}
 					$relativepath = dol_sanitizeFileName($objp->ref).'/'.dol_sanitizeFileName($objp->ref).'.pdf';
 
-					print $formfile->showPreview($file_list, $sendingstatic->element, $relativepath, 0, $param);
+					/**DEBUT SPECIFIQUE ATM **/
+					// Fix doc preview: use the 'expedition' modulepart instead of $sendingstatic->element ('shipping', a module-name alias not handled by dol_check_secure_access_document()), and pass the entity param like the other lists.
+					// Original core: print $formfile->showPreview($file_list, $sendingstatic->element, $relativepath, 0, $param);
+					print $formfile->showPreview($file_list, 'expedition', $relativepath, 0, 'entity=' . $objp->entity);
+					/**FIN SPECIFIQUE ATM **/
 				}
 				print '</td><td class="tdoverflowmax125">';
 				if ($sendingstatic->fk_project > 0) {