diff --git a/contracts/democracy/ProposalExecutor.sol b/contracts/democracy/ProposalExecutor.sol
new file mode 100644
index 0000000..0520280
--- /dev/null
+++ b/contracts/democracy/ProposalExecutor.sol
@@ -0,0 +1,5 @@
+pragma solidity ^0.4.17;
+
+contract ProposalExecutor {
+    function executeProposal(address topic, uint value, bytes data) external returns (bool success);
+}
\ No newline at end of file
diff --git a/contracts/democracy/ProposalManager.sol b/contracts/democracy/ProposalManager.sol
index bf567dd..c73495d 100644
--- a/contracts/democracy/ProposalManager.sol
+++ b/contracts/democracy/ProposalManager.sol
@@ -114,7 +114,7 @@ contract ProposalManager is Controlled {
         proposal.voteIndex[msg.sender] = votePos + 1;
     }
 
-   function tabulate(uint _proposal, uint loopLimit) {
+   function tabulate(uint _proposal, uint loopLimit) public {
         Proposal storage proposal = proposals[_proposal];
         require(block.number > proposal.vetoBlockEnd);
         require(!proposal.tabulated);
diff --git a/contracts/democracy/TrustNetwork.sol b/contracts/democracy/TrustNetwork.sol
index 3fccf1e..3625d8e 100644
--- a/contracts/democracy/TrustNetwork.sol
+++ b/contracts/democracy/TrustNetwork.sol
@@ -24,7 +24,7 @@ contract TrustNetwork is Controlled {
         topics[0x0] = newTopic(0x0, 0x0);
     }
     
-    function addTopic(address topicId, address parentTopic) onlyController {
+    function addTopic(address topicId, address parentTopic) public onlyController {
         
         Topic memory parent = topics[parentTopic];
         address vote = address(parent.voteProxy);