diff --git a/src/commands/createFunctionApp/stacks/FunctionAppStackStep.ts b/src/commands/createFunctionApp/stacks/FunctionAppStackStep.ts
index b7a1cf2bb..ac6f59b72 100644
--- a/src/commands/createFunctionApp/stacks/FunctionAppStackStep.ts
+++ b/src/commands/createFunctionApp/stacks/FunctionAppStackStep.ts
@@ -50,7 +50,9 @@ export class FunctionAppStackStep extends AzureWizardPromptStep<IFlexFunctionApp
         }
 
         if (isFlex) {
-            context.newFlexSku = result.minorVersion.stackSettings.linuxRuntimeSettings?.Sku && result.minorVersion.stackSettings.linuxRuntimeSettings?.Sku[0];
+            if (result.minorVersion.stackSettings.linuxRuntimeSettings?.Sku?.length) {
+                context.newFlexSku = result.minorVersion.stackSettings.linuxRuntimeSettings.Sku.find(s => s.skuCode === context.newPlanSku?.name);
+            }
         }
     }
 
diff --git a/src/commands/createFunctionApp/stacks/getStackPicks.ts b/src/commands/createFunctionApp/stacks/getStackPicks.ts
index 07587513a..e622c663c 100644
--- a/src/commands/createFunctionApp/stacks/getStackPicks.ts
+++ b/src/commands/createFunctionApp/stacks/getStackPicks.ts
@@ -195,6 +195,7 @@ async function getFlexStacks(context: ISubscriptionActionContext & { _stacks?: F
                 url: requestUtils.createRequestUrl(`providers/Microsoft.Web/locations/${location}/functionAppStacks`, {
                     'api-version': '2023-12-01',
                     stack,
+                    'sku': 'FC1',
                     removeDeprecatedStacks: String(!getWorkspaceSetting<boolean>('showDeprecatedStacks'))
                 }),
             }));