diff --git a/components/site/src/lib.rs b/components/site/src/lib.rs
index 6880dd5..3ab661f 100644
--- a/components/site/src/lib.rs
+++ b/components/site/src/lib.rs
@@ -204,7 +204,7 @@ impl Site {
         // a _index.md to render the index page
         let index_path = self.index_section_path();
         if let Some(ref index_section) = self.sections.get(&index_path) {
-            if self.config.build_search_index && index_section.meta.in_search_index {
+            if self.config.build_search_index && !index_section.meta.in_search_index {
                 bail!(
                     "You have enabled search in the config but disabled it in the index section: \
                     either turn off the search in the config or remote `in_search_index = true` from the \
diff --git a/components/site/tests/site.rs b/components/site/tests/site.rs
index 7bfb041..bb24c3c 100644
--- a/components/site/tests/site.rs
+++ b/components/site/tests/site.rs
@@ -461,5 +461,5 @@ fn can_build_search_index() {
 
     assert!(Path::new(&public).exists());
     assert!(file_exists!(public, "elasticlunr.min.js"));
-    assert!(file_exists!(public, "search_index.js"));
+    assert!(file_exists!(public, "search_index.en.js"));
 }