diff --git a/src/plugins/data_source_management/public/components/create_data_source_wizard/components/create_form/create_data_source_form.tsx b/src/plugins/data_source_management/public/components/create_data_source_wizard/components/create_form/create_data_source_form.tsx
index a310bb0f2a76..2de6fa497315 100644
--- a/src/plugins/data_source_management/public/components/create_data_source_wizard/components/create_form/create_data_source_form.tsx
+++ b/src/plugins/data_source_management/public/components/create_data_source_wizard/components/create_form/create_data_source_form.tsx
@@ -436,7 +436,7 @@ export class CreateDataSourceForm extends React.Component<
                 >
                   <FormattedMessage
                     id="dataSourcesManagement.createDataSource.testConnectionButton"
-                    defaultMessage="Test Connection"
+                    defaultMessage="Test connection"
                   />
                 </EuiButton>
               </EuiFlexItem>
diff --git a/src/plugins/data_source_management/public/components/edit_data_source/components/header/header.tsx b/src/plugins/data_source_management/public/components/edit_data_source/components/header/header.tsx
index 445e22401418..49c100b7ec9a 100644
--- a/src/plugins/data_source_management/public/components/edit_data_source/components/header/header.tsx
+++ b/src/plugins/data_source_management/public/components/edit_data_source/components/header/header.tsx
@@ -123,7 +123,7 @@ export const Header = ({
       >
         <FormattedMessage
           id="dataSourcesManagement.createDataSource.testConnectionButton"
-          defaultMessage="Test Connection"
+          defaultMessage="Test connection"
         />
       </EuiButton>
     );