diff --git a/src/ctl.c b/src/ctl.c
index dfbeddda..a647c6c0 100644
--- a/src/ctl.c
+++ b/src/ctl.c
@@ -1970,7 +1970,7 @@ arena_reset_finish_background_thread(tsd_t *tsd, unsigned arena_ind) {
 			unsigned ind = arena_ind % ncpus;
 			background_thread_info_t *info =
 			    &background_thread_info[ind];
-			assert(info->state = background_thread_paused);
+			assert(info->state == background_thread_paused);
 			malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
 			info->state = background_thread_started;
 			malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
diff --git a/src/jemalloc.c b/src/jemalloc.c
index c773cc44..aa79633c 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -1799,7 +1799,7 @@ imalloc_body(static_opts_t *sopts, dynamic_opts_t *dopts, tsd_t *tsd) {
 		 */
 		assert(dopts->tcache_ind == TCACHE_IND_AUTOMATIC ||
 		    dopts->tcache_ind == TCACHE_IND_NONE);
-		assert(dopts->arena_ind = ARENA_IND_AUTOMATIC);
+		assert(dopts->arena_ind == ARENA_IND_AUTOMATIC);
 		dopts->tcache_ind = TCACHE_IND_NONE;
 		/* We know that arena 0 has already been initialized. */
 		dopts->arena_ind = 0;