diff --git a/include/jemalloc/internal/tsd_malloc_thread_cleanup.h b/include/jemalloc/internal/tsd_malloc_thread_cleanup.h
index beb467a6..bf8801ef 100644
--- a/include/jemalloc/internal/tsd_malloc_thread_cleanup.h
+++ b/include/jemalloc/internal/tsd_malloc_thread_cleanup.h
@@ -47,7 +47,6 @@ tsd_get_allocates(void) {
 /* Get/set. */
 JEMALLOC_ALWAYS_INLINE tsd_t *
 tsd_get(bool init) {
-	assert(tsd_booted);
 	return &tsd_tls;
 }
 JEMALLOC_ALWAYS_INLINE void
diff --git a/include/jemalloc/internal/tsd_tls.h b/include/jemalloc/internal/tsd_tls.h
index 757aaa0e..f4f165c7 100644
--- a/include/jemalloc/internal/tsd_tls.h
+++ b/include/jemalloc/internal/tsd_tls.h
@@ -40,7 +40,6 @@ tsd_get_allocates(void) {
 /* Get/set. */
 JEMALLOC_ALWAYS_INLINE tsd_t *
 tsd_get(bool init) {
-	assert(tsd_booted);
 	return &tsd_tls;
 }
 
diff --git a/src/jemalloc.c b/src/jemalloc.c
index 15c0609f..237bfe7c 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -2110,9 +2110,8 @@ label_invalid_alignment:
 	return EINVAL;
 }
 
-/* Returns the errno-style error code of the allocation. */
-JEMALLOC_ALWAYS_INLINE int
-imalloc(static_opts_t *sopts, dynamic_opts_t *dopts) {
+JEMALLOC_ALWAYS_INLINE bool
+imalloc_init_check(static_opts_t *sopts, dynamic_opts_t *dopts) {
 	if (unlikely(!malloc_initialized()) && unlikely(malloc_init())) {
 		if (config_xmalloc && unlikely(opt_xmalloc)) {
 			malloc_write(sopts->oom_string);
@@ -2122,6 +2121,16 @@ imalloc(static_opts_t *sopts, dynamic_opts_t *dopts) {
 		set_errno(ENOMEM);
 		*dopts->result = NULL;
 
+		return false;
+	}
+
+	return true;
+}
+
+/* Returns the errno-style error code of the allocation. */
+JEMALLOC_ALWAYS_INLINE int
+imalloc(static_opts_t *sopts, dynamic_opts_t *dopts) {
+	if (tsd_get_allocates() && !imalloc_init_check(sopts, dopts)) {
 		return ENOMEM;
 	}
 
@@ -2134,6 +2143,10 @@ imalloc(static_opts_t *sopts, dynamic_opts_t *dopts) {
 		sopts->slow = false;
 		return imalloc_body(sopts, dopts, tsd);
 	} else {
+		if (!tsd_get_allocates() && !imalloc_init_check(sopts, dopts)) {
+			return ENOMEM;
+		}
+          
 		sopts->slow = true;
 		return imalloc_body(sopts, dopts, tsd);
 	}
diff --git a/src/tsd.c b/src/tsd.c
index 1204a0de..f317d486 100644
--- a/src/tsd.c
+++ b/src/tsd.c
@@ -280,11 +280,13 @@ tsd_fetch_slow(tsd_t *tsd, bool minimal) {
 		tsd_slow_update(tsd);
 	} else if (tsd_state_get(tsd) == tsd_state_uninitialized) {
 		if (!minimal) {
-			tsd_state_set(tsd, tsd_state_nominal);
-			tsd_slow_update(tsd);
-			/* Trigger cleanup handler registration. */
-			tsd_set(tsd);
-			tsd_data_init(tsd);
+			if (tsd_booted) {
+				tsd_state_set(tsd, tsd_state_nominal);
+				tsd_slow_update(tsd);
+				/* Trigger cleanup handler registration. */
+				tsd_set(tsd);
+				tsd_data_init(tsd);
+			}
 		} else {
 			tsd_state_set(tsd, tsd_state_minimal_initialized);
 			tsd_set(tsd);