diff --git a/src/plugins/wmf/samplegrabber.cpp b/src/plugins/wmf/samplegrabber.cpp
index e4ead539..41ff8d79 100644
--- a/src/plugins/wmf/samplegrabber.cpp
+++ b/src/plugins/wmf/samplegrabber.cpp
@@ -163,6 +163,9 @@ STDMETHODIMP AudioSampleGrabberCallback::OnProcessSample(REFGUID guidMajorMediaT
     if (llSampleTime == _I64_MAX) {
         // Set default QAudioBuffer start time
         llSampleTime = -1;
+    } else {
+        // WMF uses 100-nanosecond units, Qt uses microseconds
+        llSampleTime /= 10;
     }
 
     foreach (MFAudioProbeControl* probe, m_audioProbes)