diff --git a/cmake/QtTestHelpers.cmake b/cmake/QtTestHelpers.cmake
index 43b75768f04..e08ba7c8e62 100644
--- a/cmake/QtTestHelpers.cmake
+++ b/cmake/QtTestHelpers.cmake
@@ -558,6 +558,11 @@ function(qt_internal_add_test name)
         # TODO: Add functionality to specify browser
         list(APPEND extra_test_args "--browser=chrome")
 
+        # We always want to enable asyncify for tests, as some of them use exec
+        # Optimize for size (-Os), since asyncify tends to make the resulting
+        # binary very large
+        target_link_options("${name}" PRIVATE "SHELL:-s ASYNCIFY" "-Os")
+
         # This tells cmake to run the tests with this script, since wasm files can't be
         # executed directly
         set_property(TARGET "${name}" PROPERTY CROSSCOMPILING_EMULATOR "emrun")
diff --git a/cmake/QtWasmHelpers.cmake b/cmake/QtWasmHelpers.cmake
index 7ba7cd893ac..5e42c526a74 100644
--- a/cmake/QtWasmHelpers.cmake
+++ b/cmake/QtWasmHelpers.cmake
@@ -70,7 +70,6 @@ function (qt_internal_setup_wasm_target_properties wasmTarget)
     # target_link_options("${wasmTarget}" INTERFACE "SHELL:-s SOCKET_DEBUG") # print out socket,network data transfer
 
     if ("QT_EMSCRIPTEN_ASYNCIFY=1" IN_LIST QT_QMAKE_DEVICE_OPTIONS)
-
         # Emscripten recommends building with optimizations when using asyncify
         # in order to reduce wasm file size, and may also generate broken wasm
         # (with "wasm validation error: too many locals" type errors) if optimizations