diff --git a/gnss/GnssAdapter.cpp b/gnss/GnssAdapter.cpp
index 377a0781..77c48548 100644
--- a/gnss/GnssAdapter.cpp
+++ b/gnss/GnssAdapter.cpp
@@ -2691,10 +2691,12 @@ bool GnssAdapter::getDebugReport(GnssDebugReport& r)
              r.mLocation.mLocation.speed);
 
     // time block
+    r.mTime.size                  = sizeof(r.mTime);
     if(!reports.mBestPosition.empty()) {
-        r.mTime.size                    = sizeof(r.mTime);
-        r.mTime.timeEstimate            = reports.mBestPosition.back().mUtcTime.tv_sec;
-        r.mTime.timeUncertaintyNs       = (float)(reports.mTimeAndClock.back().mTimeUnc);
+        r.mTime.timeEstimate      = reports.mBestPosition.back().mUtcTime.tv_sec;
+    }
+    if(!reports.mTimeAndClock.empty()) {
+        r.mTime.timeUncertaintyNs = (float)(reports.mTimeAndClock.back().mTimeUnc);
     }
     LOC_LOGV("getDebugReport - timeestimate=%lld", r.mTime.timeEstimate);