diff --git a/server-test/src/test/scala/testpkg/BuildServerTest.scala b/server-test/src/test/scala/testpkg/BuildServerTest.scala
index bbe555068..591f0e8d1 100644
--- a/server-test/src/test/scala/testpkg/BuildServerTest.scala
+++ b/server-test/src/test/scala/testpkg/BuildServerTest.scala
@@ -135,7 +135,7 @@ class BuildServerTest extends AbstractServerTest {
     })
 
     assert(svr.waitForString(20.seconds) { s =>
-      s.contains("build/publishDiagnostics")
+      s.contains("build/publishDiagnostics") &&
       s.contains(""""diagnostics":[]""")
     })