diff --git a/ddtrace/internal/datadog/profiling/dd_wrapper/src/sample.cpp b/ddtrace/internal/datadog/profiling/dd_wrapper/src/sample.cpp
index 6a5c5d9aa5..7bb6fadb94 100644
--- a/ddtrace/internal/datadog/profiling/dd_wrapper/src/sample.cpp
+++ b/ddtrace/internal/datadog/profiling/dd_wrapper/src/sample.cpp
@@ -313,24 +313,24 @@ Datadog::Sample::push_monotonic_ns(int64_t _monotonic_ns)
     // Monotonic times have their epoch at the system start, so they need an
     // adjustment to the standard epoch
     // Just set a static for now and use a lambda to compute the offset once
-    // const static auto offset = []() {
-    //     // Get the current epoch time
-    //     using namespace std::chrono;
-    //     auto epoch_ns = duration_cast<nanoseconds>(system_clock::now().time_since_epoch()).count();
+    const static auto offset = []() {
+        // Get the current epoch time
+        using namespace std::chrono;
+        auto epoch_ns = duration_cast<nanoseconds>(system_clock::now().time_since_epoch()).count();
 
-    //     // Get the current monotonic time.  Use clock_gettime directly because the standard underspecifies
-    //     // which clock is actually used in std::chrono
-    //     timespec ts;
-    //     clock_gettime(CLOCK_MONOTONIC, &ts);
-    //     auto monotonic_ns = static_cast<int64_t>(ts.tv_sec) * 1'000'000'000LL + ts.tv_nsec;
+        // Get the current monotonic time.  Use clock_gettime directly because the standard underspecifies
+        // which clock is actually used in std::chrono
+        timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+        auto monotonic_ns = static_cast<int64_t>(ts.tv_sec) * 1'000'000'000LL + ts.tv_nsec;
 
-    //     // Compute the difference.  We're after 1970, so epoch_ns will be larger
-    //     return epoch_ns - monotonic_ns;
-    // }();
+        // Compute the difference.  We're after 1970, so epoch_ns will be larger
+        return epoch_ns - monotonic_ns;
+    }();
 
     // If timeline is not enabled, then this is a no-op
     if (is_timeline_enabled()) {
-        endtime_ns = _monotonic_ns;
+        endtime_ns = _monotonic_ns + offset;
     }
 
     return true;
diff --git a/ddtrace/profiling/collector/stack.pyx b/ddtrace/profiling/collector/stack.pyx
index 906d255e56..72a066f96a 100644
--- a/ddtrace/profiling/collector/stack.pyx
+++ b/ddtrace/profiling/collector/stack.pyx
@@ -291,7 +291,7 @@ cdef collect_threads(thread_id_ignore_list, thread_time, thread_span_links) with
     )
 
 
-cdef stack_collect(ignore_profiler, thread_time, max_nframes, interval, wall_time, thread_span_links, collect_endpoint, now_ns):
+cdef stack_collect(ignore_profiler, thread_time, max_nframes, interval, wall_time, thread_span_links, collect_endpoint, now_ns=0):
     # Do not use `threading.enumerate` to not mess with locking (gevent!)
     # Also collect the native threads, that are not registered with the built-in
     # threading module, to keep backward compatibility with the previous
@@ -578,7 +578,7 @@ class StackCollector(collector.PeriodicCollector):
                 wall_time,
                 self._thread_span_links,
                 self.endpoint_collection_enabled,
-                now_ns=compat.time_ns()
+                now_ns=now
             )
 
         used_wall_time_ns = compat.monotonic_ns() - now