diff --git a/USER_MANUAL.md b/USER_MANUAL.md
index 08baee23..fe9a4375 100644
--- a/USER_MANUAL.md
+++ b/USER_MANUAL.md
@@ -802,6 +802,7 @@ LDPC | Low Density Parity Check Codes - a family of powerful FEC codes
     * Fix WASAPI errors on some machines by supporting audio mix formats other than 16-bit integer. (PR #919)
     * Reduce CPU usage of FreeDV Reporter window by only re-sorting if we actually get new data from the server. (PR #915)
     * FreeDV Reporter: Fix issue with first column not being aligned properly with other columns. (PR #922)
+    * Fix GTK+ assertion after FreeDV Reporter has been open for a long time. (PR #929)
 2. Documentation:
     * Add missing dependency for macOS builds to README. (PR #925; thanks @relistan!)
     * Add note about using XWayland on Linux. (PR #926)
diff --git a/src/gui/dialogs/freedv_reporter.cpp b/src/gui/dialogs/freedv_reporter.cpp
index 39938348..1fce3b2b 100644
--- a/src/gui/dialogs/freedv_reporter.cpp
+++ b/src/gui/dialogs/freedv_reporter.cpp
@@ -1340,9 +1340,24 @@ double FreeDVReporterDialog::FreeDVReporterDataModel::RadiansToDegrees_(double r
 void FreeDVReporterDialog::FreeDVReporterDataModel::execQueuedAction_()
 {
     // This ensures that we handle server events in the order they're received.
-    std::unique_lock<std::mutex> lk(fnQueueMtx_);
-    fnQueue_[0]();
-    fnQueue_.erase(fnQueue_.begin());
+    std::unique_lock<std::mutex> lk(fnQueueMtx_, std::defer_lock_t());
+    lk.lock();
+    auto size = fnQueue_.size();
+    lk.unlock();
+
+    while(size > 0)
+    {
+        lk.lock();
+        auto fn = fnQueue_[0];
+        lk.unlock();
+
+        fn();
+
+        lk.lock();
+        fnQueue_.erase(fnQueue_.begin());
+        size = fnQueue_.size();
+        lk.unlock();
+    }
 }
 
 FreeDVReporterDialog::FilterFrequency FreeDVReporterDialog::getFilterForFrequency_(uint64_t freq)