diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index f1ff59e96..b9cd8c7ed 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -710,12 +710,13 @@ namespace cryptonote
         }
       }
 
-      size_t max_blocks = COMMAND_RPC_GET_BLOCKS_FAST_MAX_BLOCK_COUNT;
+      size_t max_blocks = req.max_block_count > 0
+        ? std::min(req.max_block_count, (uint64_t)COMMAND_RPC_GET_BLOCKS_FAST_MAX_BLOCK_COUNT)
+        : COMMAND_RPC_GET_BLOCKS_FAST_MAX_BLOCK_COUNT;
+
       if (m_rpc_payment)
       {
-        max_blocks = res.credits / COST_PER_BLOCK;
-        if (max_blocks > COMMAND_RPC_GET_BLOCKS_FAST_MAX_BLOCK_COUNT)
-          max_blocks = COMMAND_RPC_GET_BLOCKS_FAST_MAX_BLOCK_COUNT;
+        max_blocks = std::min((size_t)(res.credits / COST_PER_BLOCK), max_blocks);
         if (max_blocks == 0)
         {
           res.status = CORE_RPC_STATUS_PAYMENT_REQUIRED;
diff --git a/src/rpc/core_rpc_server_commands_defs.h b/src/rpc/core_rpc_server_commands_defs.h
index a9286bd0f..46e52d42f 100644
--- a/src/rpc/core_rpc_server_commands_defs.h
+++ b/src/rpc/core_rpc_server_commands_defs.h
@@ -88,7 +88,7 @@ namespace cryptonote
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define CORE_RPC_VERSION_MAJOR 3
-#define CORE_RPC_VERSION_MINOR 14
+#define CORE_RPC_VERSION_MINOR 15
 #define MAKE_CORE_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define CORE_RPC_VERSION MAKE_CORE_RPC_VERSION(CORE_RPC_VERSION_MAJOR, CORE_RPC_VERSION_MINOR)
 
@@ -177,6 +177,8 @@ namespace cryptonote
       bool        prune;
       bool        no_miner_tx;
       uint64_t    pool_info_since;
+      uint64_t    max_block_count;
+
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE_PARENT(rpc_access_request_base)
         KV_SERIALIZE_OPT(requested_info, (uint8_t)0)
@@ -185,6 +187,7 @@ namespace cryptonote
         KV_SERIALIZE(prune)
         KV_SERIALIZE_OPT(no_miner_tx, false)
         KV_SERIALIZE_OPT(pool_info_since, (uint64_t)0)
+        KV_SERIALIZE_OPT(max_block_count, (uint64_t)0)
       END_KV_SERIALIZE_MAP()
     };
     typedef epee::misc_utils::struct_init<request_t> request;
diff --git a/src/rpc/daemon_messages.h b/src/rpc/daemon_messages.h
index fb33f0d4a..8c9ce1df1 100644
--- a/src/rpc/daemon_messages.h
+++ b/src/rpc/daemon_messages.h
@@ -98,6 +98,7 @@ BEGIN_RPC_MESSAGE_CLASS(GetBlocksFast);
     RPC_MESSAGE_MEMBER(uint64_t, start_height);
     RPC_MESSAGE_MEMBER(uint64_t, current_height);
     RPC_MESSAGE_MEMBER(std::vector<cryptonote::rpc::block_output_indices>, output_indices);
+    RPC_MESSAGE_MEMBER(uint64_t, max_block_count);
   END_RPC_MESSAGE_RESPONSE;
 END_RPC_MESSAGE_CLASS;