diff --git a/server/src/main/java/org/elasticsearch/search/crossproject/NoMatchingProjectException.java b/server/src/main/java/org/elasticsearch/search/crossproject/NoMatchingProjectException.java
index 5c271e251795e..08a29a4cf6e39 100644
--- a/server/src/main/java/org/elasticsearch/search/crossproject/NoMatchingProjectException.java
+++ b/server/src/main/java/org/elasticsearch/search/crossproject/NoMatchingProjectException.java
@@ -20,7 +20,7 @@
 public final class NoMatchingProjectException extends ResourceNotFoundException {
 
     public NoMatchingProjectException(String projectName) {
-        super("No such project: [" + projectName + "]");
+        super("no such project [" + projectName + "]");
     }
 
     public NoMatchingProjectException(StreamInput in) throws IOException {