diff --git a/x-pack/plugins/infra/public/pages/logs/settings/indices_configuration_form_state.ts b/x-pack/plugins/infra/public/pages/logs/settings/indices_configuration_form_state.ts
index d581c5feb3d6b..7165a34fb5ba1 100644
--- a/x-pack/plugins/infra/public/pages/logs/settings/indices_configuration_form_state.ts
+++ b/x-pack/plugins/infra/public/pages/logs/settings/indices_configuration_form_state.ts
@@ -19,6 +19,7 @@ import {
   FormValidationError,
   validateIndexPattern,
   validateStringNotEmpty,
+  validateStringNoSpaces,
 } from './validation_errors';
 
 export type LogIndicesFormState = LogIndexNameReference | LogDataViewReference | undefined;
@@ -35,7 +36,10 @@ export const useLogIndicesFormElement = (initialValue: LogIndicesFormState) => {
         if (logIndices == null) {
           return validateStringNotEmpty('log data view', '');
         } else if (logIndexNameReferenceRT.is(logIndices)) {
-          return validateStringNotEmpty('log indices', logIndices.indexName);
+          return [
+            ...validateStringNotEmpty('log indices', logIndices.indexName),
+            ...validateStringNoSpaces('log indices', logIndices.indexName),
+          ];
         } else {
           const emptyStringErrors = validateStringNotEmpty('log data view', logIndices.dataViewId);
 
diff --git a/x-pack/plugins/infra/public/pages/logs/settings/source_configuration_form_errors.tsx b/x-pack/plugins/infra/public/pages/logs/settings/source_configuration_form_errors.tsx
index c6a185aeda7ca..e7cdf43136f3f 100644
--- a/x-pack/plugins/infra/public/pages/logs/settings/source_configuration_form_errors.tsx
+++ b/x-pack/plugins/infra/public/pages/logs/settings/source_configuration_form_errors.tsx
@@ -40,6 +40,16 @@ export const LogSourceConfigurationFormError: React.FC<{ error: FormValidationEr
         }}
       />
     );
+  } else if (error.type === 'includes_spaces') {
+    return (
+      <FormattedMessage
+        id="xpack.infra.logSourceConfiguration.includesSpacesErrorMessage"
+        defaultMessage="The field '{fieldName}' must not include spaces."
+        values={{
+          fieldName: error.fieldName,
+        }}
+      />
+    );
   } else if (error.type === 'empty_column_list') {
     return (
       <FormattedMessage
diff --git a/x-pack/plugins/infra/public/pages/logs/settings/validation_errors.ts b/x-pack/plugins/infra/public/pages/logs/settings/validation_errors.ts
index f8e4862817bae..e6b375efdaab7 100644
--- a/x-pack/plugins/infra/public/pages/logs/settings/validation_errors.ts
+++ b/x-pack/plugins/infra/public/pages/logs/settings/validation_errors.ts
@@ -22,6 +22,11 @@ export interface EmptyFieldValidationError {
   fieldName: string;
 }
 
+export interface IncludesSpacesValidationError {
+  type: 'includes_spaces';
+  fieldName: string;
+}
+
 export interface EmptyColumnListValidationError {
   type: 'empty_column_list';
 }
@@ -55,6 +60,7 @@ export type FormValidationError =
   | GenericValidationError
   | ChildFormValidationError
   | EmptyFieldValidationError
+  | IncludesSpacesValidationError
   | EmptyColumnListValidationError
   | MissingTimestampFieldValidationError
   | MissingMessageFieldValidationError
@@ -65,6 +71,9 @@ export type FormValidationError =
 export const validateStringNotEmpty = (fieldName: string, value: string): FormValidationError[] =>
   value === '' ? [{ type: 'empty_field', fieldName }] : [];
 
+export const validateStringNoSpaces = (fieldName: string, value: string): FormValidationError[] =>
+  value.includes(' ') ? [{ type: 'includes_spaces', fieldName }] : [];
+
 export const validateColumnListNotEmpty = (columns: unknown[]): FormValidationError[] =>
   columns.length <= 0 ? [{ type: 'empty_column_list' }] : [];