diff --git a/src/components/parameters-tabs.tsx b/src/components/parameters-tabs.tsx
index 10c400f305..9015758abb 100644
--- a/src/components/parameters-tabs.tsx
+++ b/src/components/parameters-tabs.tsx
@@ -69,6 +69,7 @@ import {
 } from 'services/study/short-circuit-analysis';
 import { useGetPccMinParameters } from './dialogs/parameters/use-get-pcc-min-parameters';
 import { useWorkspacePanelActions } from './workspace/hooks/use-workspace-panel-actions';
+import { fetchContingencyCount } from '../services/study';
 
 enum TAB_VALUES {
     lfParamsTabValue = 'LOAD_FLOW',
@@ -295,6 +296,9 @@ const ParametersTabs: FunctionComponent = () => {
                     <SecurityAnalysisParametersInline
                         studyUuid={studyUuid}
                         parametersBackend={securityAnalysisParametersBackend}
+                        fetchContingencyCount={(contingencyLists: string[] | null) =>
+                            fetchContingencyCount(studyUuid, currentNodeUuid, currentRootNetworkUuid, contingencyLists)
+                        }
                         setHaveDirtyFields={setDirtyFields}
                         isDeveloperMode={isDeveloperMode}
                     />
diff --git a/src/components/run-button-container.jsx b/src/components/run-button-container.jsx
index eb23b761db..c03ee0ed32 100644
--- a/src/components/run-button-container.jsx
+++ b/src/components/run-button-container.jsx
@@ -219,16 +219,16 @@ export function RunButtonContainer({ studyUuid, currentNode, currentRootNetworkU
         [currentNode, snackError]
     );
 
-    const handleStartSecurityAnalysis = (contingencyListNames) => {
+    const handleStartSecurityAnalysis = useCallback(() => {
         startComputationAsync(
             ComputingType.SECURITY_ANALYSIS,
             null,
-            () => startSecurityAnalysis(studyUuid, currentNode?.id, currentRootNetworkUuid, contingencyListNames),
+            () => startSecurityAnalysis(studyUuid, currentNode?.id, currentRootNetworkUuid),
             () => {},
             null,
             null
         );
-    };
+    }, [studyUuid, currentNode?.id, currentRootNetworkUuid, startComputationAsync]);
 
     const handleStartDynamicSimulation = (dynamicSimulationConfiguration, debug) => {
         startComputationAsync(
@@ -310,7 +310,8 @@ export function RunButtonContainer({ studyUuid, currentNode, currentRootNetworkU
             [ComputingType.SECURITY_ANALYSIS]: {
                 messageId: 'SecurityAnalysis',
                 startComputation() {
-                    setShowContingencyListSelector(true);
+                    //setShowContingencyListSelector(true);
+                    handleStartSecurityAnalysis();
                 },
                 actionOnRunnable() {
                     actionOnRunnables(ComputingType.SECURITY_ANALYSIS, () =>
@@ -508,6 +509,7 @@ export function RunButtonContainer({ studyUuid, currentNode, currentRootNetworkU
         checkForbiddenProvider,
         studyUuid,
         handleStartLoadFlow,
+        handleStartSecurityAnalysis,
         currentNode?.id,
         currentRootNetworkUuid,
         startComputationAsync,
diff --git a/src/services/study/index.ts b/src/services/study/index.ts
index 3c20ee0732..62d2edc122 100644
--- a/src/services/study/index.ts
+++ b/src/services/study/index.ts
@@ -31,7 +31,7 @@ export const getStudyUrl = (studyUuid: UUID | null) =>
 
 export const getStudyUrlWithNodeUuidAndRootNetworkUuid = (
     studyUuid: string | null | undefined,
-    nodeUuid: string | undefined,
+    nodeUuid: string | null | undefined, // ça peut pas être null ?
     rootNetworkUuid: string | undefined | null
 ) =>
     `${PREFIX_STUDY_QUERIES}/v1/studies/${safeEncodeURIComponent(studyUuid)}/root-networks/${safeEncodeURIComponent(
@@ -200,16 +200,16 @@ export function searchEquipmentsInfos(
 }
 
 export function fetchContingencyCount(
-    studyUuid: UUID,
-    currentNodeUuid: UUID,
-    currentRootNetworkUuid: UUID,
-    contingencyListNames: string[]
+    studyUuid: UUID | null, // ça peut pas être null ?
+    currentNodeUuid: UUID | null,
+    currentRootNetworkUuid: UUID | null,
+    contingencyListNames: string[] | null
 ): Promise<number> {
     console.info(
         `Fetching contingency count for ${contingencyListNames} on '${studyUuid}' for root network '${currentRootNetworkUuid}' and node '${currentNodeUuid}'...`
     );
 
-    const contingencyListNamesParams = getRequestParamFromList(contingencyListNames, 'contingencyListName');
+    const contingencyListNamesParams = getRequestParamFromList(contingencyListNames ?? [], 'contingencyListName');
     const urlSearchParams = new URLSearchParams(contingencyListNamesParams);
 
     const url =
diff --git a/src/services/study/security-analysis.ts b/src/services/study/security-analysis.ts
index 18b3f4e00f..0060cd7144 100644
--- a/src/services/study/security-analysis.ts
+++ b/src/services/study/security-analysis.ts
@@ -6,7 +6,6 @@
  */
 
 import { getStudyUrl, getStudyUrlWithNodeUuidAndRootNetworkUuid, PREFIX_STUDY_QUERIES } from './index';
-import { getRequestParamFromList } from '../utils';
 import type { UUID } from 'node:crypto';
 import { backendFetch, backendFetchFile, backendFetchJson, backendFetchText, GsLangUser } from '@gridsuite/commons-ui';
 import { SecurityAnalysisQueryParams } from '../../components/results/securityanalysis/security-analysis.type';
@@ -14,21 +13,17 @@ import { SecurityAnalysisQueryParams } from '../../components/results/securityan
 export function startSecurityAnalysis(
     studyUuid: UUID,
     currentNodeUuid: UUID,
-    currentRootNetworkUuid: UUID,
-    contingencyListUuids: UUID[]
+    currentRootNetworkUuid: UUID
 ): Promise<Response> {
     console.info(
         `Running security analysis on ${studyUuid} on root network ${currentRootNetworkUuid} and node ${currentNodeUuid} ...`
     );
-    // Add params to Url
-    const contingencyListsQueryParams = getRequestParamFromList(contingencyListUuids, 'contingencyListName');
-    const urlSearchParams = new URLSearchParams(contingencyListsQueryParams);
 
     const url = `${getStudyUrlWithNodeUuidAndRootNetworkUuid(
         studyUuid,
         currentNodeUuid,
         currentRootNetworkUuid
-    )}/security-analysis/run?${urlSearchParams}`;
+    )}/security-analysis/run`;
 
     console.debug(url);
     return backendFetch(url, { method: 'post' });