diff --git a/rpc.cpp b/rpc.cpp
index a634fff6..6041de05 100644
--- a/rpc.cpp
+++ b/rpc.cpp
@@ -822,6 +822,7 @@ Value sendmany(const Array& params, bool fHelp)
         vecSend.push_back(make_pair(scriptPubKey, nAmount));
     }
 
+    CRITICAL_BLOCK(cs_main)
     CRITICAL_BLOCK(cs_mapWallet)
     {
         // Check funds