diff --git a/src/cc/CCchannels.h b/src/cc/CCchannels.h
index a1c51204d..26057457f 100644
--- a/src/cc/CCchannels.h
+++ b/src/cc/CCchannels.h
@@ -24,7 +24,7 @@ bool ChannelsValidate(struct CCcontract_info *cp,Eval* eval,const CTransaction &
 std::string ChannelOpen(uint64_t txfee,CPubKey destpub,int32_t numpayments,int64_t payment);
 std::string ChannelStop(uint64_t txfee,CPubKey destpub,uint256 origtxid);
 std::string ChannelPayment(uint64_t txfee,uint256 prevtxid,uint256 origtxid,int32_t n,int64_t amount);
-std::string ChannelCollect(uint64_t txfee,uint256 paytxid,uint256 origtxid,int32_t n,uint64_t amount);
+std::string ChannelCollect(uint64_t txfee,uint256 paytxid,uint256 origtxid,int32_t n,int64_t amount);
 std::string ChannelRefund(uint64_t txfee,uint256 stoptxid,uint256 origtxid);
 
 // CCcustom
diff --git a/src/cc/channels.cpp b/src/cc/channels.cpp
index dec675bc3..dc1a3f291 100644
--- a/src/cc/channels.cpp
+++ b/src/cc/channels.cpp
@@ -253,7 +253,7 @@ std::string ChannelStop(uint64_t txfee,CPubKey destpub,uint256 origtxid)
     return("");
 }
 
-std::string ChannelPayment(uint64_t txfee,uint256 prevtxid,uint256 origtxid,int32_t n,uint64_t amount)
+std::string ChannelPayment(uint64_t txfee,uint256 prevtxid,uint256 origtxid,int32_t n,int64_t amount)
 {
     CMutableTransaction mtx; CPubKey mypk,destpub; uint256 secret; struct CCcontract_info *cp,C; int32_t prevdepth;
     // verify lasttxid and origtxid match and src is me
@@ -271,7 +271,7 @@ std::string ChannelPayment(uint64_t txfee,uint256 prevtxid,uint256 origtxid,int3
     return("");
 }
 
-std::string ChannelCollect(uint64_t txfee,uint256 paytxid,uint256 origtxid,int32_t n,uint64_t amount)
+std::string ChannelCollect(uint64_t txfee,uint256 paytxid,uint256 origtxid,int32_t n,int64_t amount)
 {
     CMutableTransaction mtx; CPubKey mypk,senderpub; struct CCcontract_info *cp,C; int32_t prevdepth;
     // verify paytxid and origtxid match and dest is me