diff --git a/CMakeLists.txt b/CMakeLists.txt
index a678e3561..a3d4e6557 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -123,8 +123,8 @@ add_compile_options(-fno-math-errno -freciprocal-math -funsafe-math-optimization
 add_compile_options(-fexceptions -fstrict-aliasing)
 
 if(${USE_ASAN})
-add_compile_options(-fsanitize=thread)
-add_link_options(-fsanitize=thread)
+add_compile_options(-fsanitize=address)
+add_link_options(-fsanitize=address)
 endif()
 
 # don't use REQUIRED with subsequent find_package() operations; we use
diff --git a/src/demo/yield.c b/src/demo/yield.c
index 7bf950ce7..119f10ddb 100644
--- a/src/demo/yield.c
+++ b/src/demo/yield.c
@@ -106,8 +106,6 @@ yielder(struct marsh* m){
     ncplane_reparent(m->vopts.n, m->vopts.n);
     pthread_mutex_unlock(&rlock);
     pthread_cond_signal(&rcond);
-    // FIXME only sleep if we didn't take enough time updating ncvisual!
-    //demo_nanosleep(m->nc, &m->tspec);
     pthread_mutex_lock(&lock);
     while(*m->turn != m->id && !*m->done){
       pthread_cond_wait(&cond, &lock);