diff --git a/tslang/test/tester/CMakeLists.txt b/tslang/test/tester/CMakeLists.txt
index d21958d9a..10d66dbe4 100644
--- a/tslang/test/tester/CMakeLists.txt
+++ b/tslang/test/tester/CMakeLists.txt
@@ -2230,23 +2230,22 @@ if (WIN32)
 endif()
 
 # An async program linked by tslang itself (test-runner links with gc.lib whatever the model) under
-# every model but gc - see async-without-collector.cmake.
-if (WIN32)
-    if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
-        set(async_without_collector_opt "--opt;--opt_level=3")
-    else()
-        set(async_without_collector_opt "--di;--opt_level=0")
-    endif()
-    add_test(NAME test-compile-async-without-collector
-             COMMAND ${CMAKE_COMMAND}
-                     "-DTSLANG=$<TARGET_FILE:tslang>"
-                     "-DTESTS_DIR=${PROJECT_SOURCE_DIR}/test/tester/tests"
-                     "-DWORK_DIR=${CMAKE_CURRENT_BINARY_DIR}/async-without-collector"
-                     "-DLLVM_LIB=${LLVM_LIBRARY_DIR}"
-                     "-DTSLANG_LIB=${CMAKE_BINARY_DIR}/lib"
-                     "-DOPT=${async_without_collector_opt}"
-                     -P "${CMAKE_CURRENT_SOURCE_DIR}/async-without-collector.cmake")
+# every model but gc - see async-without-collector.cmake. Every platform: the static async runtime
+# is an archive on Linux too, and before the split it failed there the same way.
+if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")
+    set(async_without_collector_opt "--opt;--opt_level=3")
+else()
+    set(async_without_collector_opt "--di;--opt_level=0")
 endif()
+add_test(NAME test-compile-async-without-collector
+         COMMAND ${CMAKE_COMMAND}
+                 "-DTSLANG=$<TARGET_FILE:tslang>"
+                 "-DTESTS_DIR=${PROJECT_SOURCE_DIR}/test/tester/tests"
+                 "-DWORK_DIR=${CMAKE_CURRENT_BINARY_DIR}/async-without-collector"
+                 "-DLLVM_LIB=${LLVM_LIBRARY_DIR}"
+                 "-DTSLANG_LIB=${CMAKE_BINARY_DIR}/lib"
+                 "-DOPT=${async_without_collector_opt}"
+                 -P "${CMAKE_CURRENT_SOURCE_DIR}/async-without-collector.cmake")
 
 # tslang choosing the collector's linkage itself under -mm=gc - see shared-collector-auto.cmake.
 if (WIN32)
diff --git a/tslang/test/tester/async-without-collector.cmake b/tslang/test/tester/async-without-collector.cmake
index 14dd1c23b..dd8bfe320 100644
--- a/tslang/test/tester/async-without-collector.cmake
+++ b/tslang/test/tester/async-without-collector.cmake
@@ -4,11 +4,13 @@
 # code used to sit in the scheduler's own object file, so every program that awaits anything pulled
 # in references to GC_allow_register_threads, GC_register_my_thread, GC_unregister_my_thread and
 # GC_get_stack_base - and under rc, none and own the compiler links no gc.lib, so none of them
-# linked: "unresolved external symbol GC_allow_register_threads". It is an object file of its own
+# linked: "unresolved external symbol GC_allow_register_threads" on Windows, "undefined reference to
+# `GC_register_my_thread'" on Linux. It is an object file of its own
 # now, pulled in only by the call to GC_enable_threads that the GC pass puts in a gc program.
 #
-# This drives `tslang --emit=exe` itself, which `test-runner` does not: it links with lld directly,
-# and always with gc.lib, so the rc and none corpus runs of the same file never saw it.
+# This drives `tslang --emit=exe` itself, which `test-runner` does not: it links the program itself,
+# and always with the collector (gc.lib, -lgc), so the rc and none corpus runs of the same file never
+# saw it.
 
 cmake_minimum_required(VERSION 3.17.3)