diff --git a/CMakeLists.txt b/CMakeLists.txt
index a1b64aec2..e59535788 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,9 +25,6 @@ include(AwsSanitizers)
 include(AwsThreadAffinity)
 include(AwsThreadName)
 include(CTest)
-include(AwsCRuntime)
-
-aws_determine_local_c_runtime(AWS_C_RUNTIME)
 
 set(GENERATED_ROOT_DIR "${CMAKE_CURRENT_BINARY_DIR}/generated")
 set(GENERATED_INCLUDE_DIR "${GENERATED_ROOT_DIR}/include")
diff --git a/source/posix/thread.c b/source/posix/thread.c
index dfa18ebb1..f80e9acd3 100644
--- a/source/posix/thread.c
+++ b/source/posix/thread.c
@@ -276,7 +276,6 @@ int aws_thread_launch(
                 goto cleanup;
             }
         }
-#ifdef AWS_C_RUNTIME_MUSL
         if (!options->stack_size) {
             size_t stack_size;
             attr_return = pthread_attr_getstacksize(attributes_ptr, &stack_size);
@@ -284,14 +283,13 @@ int aws_thread_launch(
                 goto cleanup;
             }
 
-            if (stack_size < 2 * 1024 * 1024) {
-                attr_return = pthread_attr_setstacksize(attributes_ptr, 2 * 1024 * 1024);
+            if (stack_size < 1 * 1024 * 1024) {
+                attr_return = pthread_attr_setstacksize(attributes_ptr, 1 * 1024 * 1024);
                 if (attr_return) {
                     goto cleanup;
                 
             }
         }
-#endif
 
 /* AFAIK you can't set thread affinity on apple platforms, and it doesn't really matter since all memory
  * NUMA or not is setup in interleave mode.