diff --git a/src/net_processing.cpp b/src/net_processing.cpp
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -296,7 +296,7 @@
  * We use this to avoid requesting transactions that have already been
  * confirmed.
  */
-RecursiveMutex g_cs_recent_confirmed_transactions;
+Mutex g_cs_recent_confirmed_transactions;
 std::unique_ptr<CRollingBloomFilter> g_recent_confirmed_transactions
     GUARDED_BY(g_cs_recent_confirmed_transactions);