diff --git a/include/jemalloc/internal/arena_inlines_b.h b/include/jemalloc/internal/arena_inlines_b.h
index 930daba0..fbb8fa18 100644
--- a/include/jemalloc/internal/arena_inlines_b.h
+++ b/include/jemalloc/internal/arena_inlines_b.h
@@ -98,7 +98,7 @@ arena_prof_tctx_reset(tsd_t *tsd, const void *ptr, prof_tctx_t *tctx) {
 }
 
 JEMALLOC_ALWAYS_INLINE void
-arena_prof_alloc_time_set(tsd_t *tsd, const void *ptr, nstime_t t) {
+arena_prof_alloc_time_set(tsd_t *tsd, const void *ptr, nstime_t *t) {
 	cassert(config_prof);
 	assert(ptr != NULL);
 
diff --git a/include/jemalloc/internal/extent.h b/include/jemalloc/internal/extent.h
index 3a20540d..fa7d1260 100644
--- a/include/jemalloc/internal/extent.h
+++ b/include/jemalloc/internal/extent.h
@@ -461,8 +461,8 @@ extent_prof_tctx_set(extent_t *extent, prof_tctx_t *tctx) {
 }
 
 static inline void
-extent_prof_alloc_time_set(extent_t *extent, nstime_t t) {
-	nstime_copy(&extent->e_alloc_time, &t);
+extent_prof_alloc_time_set(extent_t *extent, nstime_t *t) {
+	nstime_copy(&extent->e_alloc_time, t);
 }
 
 static inline bool
diff --git a/include/jemalloc/internal/large_externs.h b/include/jemalloc/internal/large_externs.h
index 85786bb2..a0f48b81 100644
--- a/include/jemalloc/internal/large_externs.h
+++ b/include/jemalloc/internal/large_externs.h
@@ -25,6 +25,6 @@ size_t large_salloc(tsdn_t *tsdn, const extent_t *extent);
 void large_prof_info_get(const extent_t *extent, prof_info_t *prof_info);
 void large_prof_tctx_set(extent_t *extent, prof_tctx_t *tctx);
 void large_prof_tctx_reset(extent_t *extent);
-void large_prof_alloc_time_set(extent_t *extent, nstime_t time);
+void large_prof_alloc_time_set(extent_t *extent, nstime_t *time);
 
 #endif /* JEMALLOC_INTERNAL_LARGE_EXTERNS_H */
diff --git a/include/jemalloc/internal/prof_inlines_b.h b/include/jemalloc/internal/prof_inlines_b.h
index c6f12ca5..657e1168 100644
--- a/include/jemalloc/internal/prof_inlines_b.h
+++ b/include/jemalloc/internal/prof_inlines_b.h
@@ -67,7 +67,7 @@ prof_tctx_reset(tsd_t *tsd, const void *ptr, prof_tctx_t *tctx) {
 }
 
 JEMALLOC_ALWAYS_INLINE void
-prof_alloc_time_set(tsd_t *tsd, const void *ptr, nstime_t t) {
+prof_alloc_time_set(tsd_t *tsd, const void *ptr, nstime_t *t) {
 	cassert(config_prof);
 	assert(ptr != NULL);
 
diff --git a/src/large.c b/src/large.c
index 4d1257f6..f10b0d15 100644
--- a/src/large.c
+++ b/src/large.c
@@ -383,6 +383,6 @@ large_prof_tctx_reset(extent_t *extent) {
 }
 
 void
-large_prof_alloc_time_set(extent_t *extent, nstime_t t) {
+large_prof_alloc_time_set(extent_t *extent, nstime_t *t) {
 	extent_prof_alloc_time_set(extent, t);
 }
diff --git a/src/prof.c b/src/prof.c
index 0d6da21c..4d3a8006 100644
--- a/src/prof.c
+++ b/src/prof.c
@@ -168,7 +168,7 @@ prof_malloc_sample_object(tsd_t *tsd, const void *ptr, size_t usize,
 	 * when free() is called. */
 	nstime_t t = NSTIME_ZERO_INITIALIZER;
 	nstime_update(&t);
-	prof_alloc_time_set(tsd, ptr, t);
+	prof_alloc_time_set(tsd, ptr, &t);
 
 	malloc_mutex_lock(tsd_tsdn(tsd), tctx->tdata->lock);
 	tctx->cnts.curobjs++;