diff --git a/tests/auto/CMakeLists.txt b/tests/auto/CMakeLists.txt
index c9f31e8109..e714c5c8c2 100644
--- a/tests/auto/CMakeLists.txt
+++ b/tests/auto/CMakeLists.txt
@@ -58,6 +58,7 @@ endif()
 
 if(WASM)
     add_subdirectory(corelib/io/qdataurl)
+    add_subdirectory(corelib/io/qbuffer)
     add_subdirectory(corelib/io/qsettings)
     add_subdirectory(corelib/serialization)
     add_subdirectory(corelib/text)