diff --git a/src/policy/fees.h b/src/policy/fees.h
index fdbf9569306..c05cabadf94 100644
--- a/src/policy/fees.h
+++ b/src/policy/fees.h
@@ -238,7 +238,7 @@ public:
         EXCLUSIVE_LOCKS_REQUIRED(!m_cs_fee_estimator);
 
 private:
-    mutable RecursiveMutex m_cs_fee_estimator;
+    mutable Mutex m_cs_fee_estimator;
 
     unsigned int nBestSeenHeight GUARDED_BY(m_cs_fee_estimator);
     unsigned int firstRecordedHeight GUARDED_BY(m_cs_fee_estimator);