diff --git a/react-openapi/src/context/AppProvider.tsx b/react-openapi/src/context/AppProvider.tsx
index fffbf88..b2d19c3 100644
--- a/react-openapi/src/context/AppProvider.tsx
+++ b/react-openapi/src/context/AppProvider.tsx
@@ -27,7 +27,7 @@ export function AppProvider({ specConfiguration, children }: AppProviderProps) {
 
         const spec = await loadSpec(specConfiguration.specUrl);
 
-        const allMessages = validateSpec(spec);
+        const allMessages = validateSpec(spec, specConfiguration);
 
         const errs = allMessages.filter((m) => m.type === "error");
         const warns = allMessages.filter((m) => m.type === "warning");
diff --git a/react-openapi/src/spec-validator.ts b/react-openapi/src/spec-validator.ts
index 510c92f..741ac85 100644
--- a/react-openapi/src/spec-validator.ts
+++ b/react-openapi/src/spec-validator.ts
@@ -1,6 +1,6 @@
-import type { OpenApiSpec, ValidationMessage } from "./types";
+import type { OpenApiSpec, ValidationMessage, SpecConfiguration } from "./types";
 
-export function validateSpec(spec: OpenApiSpec): ValidationMessage[] {
+export function validateSpec(spec: OpenApiSpec, specConfig?: SpecConfiguration): ValidationMessage[] {
   const messages: ValidationMessage[] = [];
   const schemas = (spec.components?.schemas ?? {}) as Record<string, any>;
   const paths = spec.paths ?? {};
@@ -13,7 +13,7 @@ export function validateSpec(spec: OpenApiSpec): ValidationMessage[] {
     messages.push({ type: "error", message: "Missing 'info.title'" });
   }
 
-  if (!spec.servers?.[0]?.url) {
+  if (!spec.servers?.[0]?.url && !specConfig?.baseApiUrl) {
     messages.push({ type: "warning", message: "No 'servers[0].url' defined — provide 'baseApiUrl' in specConfiguration" });
   }