diff --git a/x-pack/plugin/rank-rrf/src/test/java/org/elasticsearch/xpack/rank/rrf/RRFRetrieverBuilderTests.java b/x-pack/plugin/rank-rrf/src/test/java/org/elasticsearch/xpack/rank/rrf/RRFRetrieverBuilderTests.java
index b2554a2210769..f5a9f4e9b0c3e 100644
--- a/x-pack/plugin/rank-rrf/src/test/java/org/elasticsearch/xpack/rank/rrf/RRFRetrieverBuilderTests.java
+++ b/x-pack/plugin/rank-rrf/src/test/java/org/elasticsearch/xpack/rank/rrf/RRFRetrieverBuilderTests.java
@@ -49,8 +49,8 @@ public void testRetrieverExtractionErrors() throws IOException {
         ) {
             SearchSourceBuilder ssb = new SearchSourceBuilder();
             IllegalArgumentException iae = expectThrows(
-                    IllegalArgumentException.class,
-                    () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
+                IllegalArgumentException.class,
+                () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
             );
             assertEquals("[search_after] cannot be used in children of compound retrievers", iae.getMessage());
         }
@@ -64,8 +64,8 @@ public void testRetrieverExtractionErrors() throws IOException {
         ) {
             SearchSourceBuilder ssb = new SearchSourceBuilder();
             IllegalArgumentException iae = expectThrows(
-                    IllegalArgumentException.class,
-                    () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
+                IllegalArgumentException.class,
+                () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
             );
             assertEquals("[terminate_after] cannot be used in children of compound retrievers", iae.getMessage());
         }
@@ -78,8 +78,8 @@ public void testRetrieverExtractionErrors() throws IOException {
         ) {
             SearchSourceBuilder ssb = new SearchSourceBuilder();
             IllegalArgumentException iae = expectThrows(
-                    IllegalArgumentException.class,
-                    () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
+                IllegalArgumentException.class,
+                () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
             );
             assertEquals("[sort] cannot be used in children of compound retrievers", iae.getMessage());
         }
@@ -92,8 +92,8 @@ public void testRetrieverExtractionErrors() throws IOException {
         ) {
             SearchSourceBuilder ssb = new SearchSourceBuilder();
             IllegalArgumentException iae = expectThrows(
-                    IllegalArgumentException.class,
-                    () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
+                IllegalArgumentException.class,
+                () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
             );
             assertEquals("[min_score] cannot be used in children of compound retrievers", iae.getMessage());
         }
@@ -107,8 +107,8 @@ public void testRetrieverExtractionErrors() throws IOException {
         ) {
             SearchSourceBuilder ssb = new SearchSourceBuilder();
             IllegalArgumentException iae = expectThrows(
-                    IllegalArgumentException.class,
-                    () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
+                IllegalArgumentException.class,
+                () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
             );
             assertEquals("[collapse] cannot be used in children of compound retrievers", iae.getMessage());
         }
@@ -121,8 +121,8 @@ public void testRetrieverExtractionErrors() throws IOException {
         ) {
             SearchSourceBuilder ssb = new SearchSourceBuilder();
             IllegalArgumentException iae = expectThrows(
-                    IllegalArgumentException.class,
-                    () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
+                IllegalArgumentException.class,
+                () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
             );
             assertEquals("[rank] cannot be used in children of compound retrievers", iae.getMessage());
         }
@@ -138,8 +138,8 @@ public void testRetrieverBuilderParsingMaxDepth() throws IOException {
         ) {
             SearchSourceBuilder ssb = new SearchSourceBuilder();
             IllegalArgumentException iae = expectThrows(
-                    IllegalArgumentException.class,
-                    () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
+                IllegalArgumentException.class,
+                () -> ssb.parseXContent(parser, true, nf -> true).rewrite(null)
             );
             assertEquals("[1:65] [rrf] failed to parse field [retrievers]", iae.getMessage());
             assertEquals(
@@ -169,4 +169,4 @@ protected NamedXContentRegistry xContentRegistry() {
         );
         return new NamedXContentRegistry(entries);
     }
-}
\ No newline at end of file
+}