diff --git a/contracts/ResolutionManager/ResolutionManagerBase.sol b/contracts/ResolutionManager/ResolutionManagerBase.sol
index 819e139..a72692c 100644
--- a/contracts/ResolutionManager/ResolutionManagerBase.sol
+++ b/contracts/ResolutionManager/ResolutionManagerBase.sol
@@ -383,6 +383,7 @@ abstract contract ResolutionManagerBase {
             //if (!resolution.hasVoted[msg.sender]) {
             // Did sender's delegate vote?
             if (
+                !resolution.hasVoted[msg.sender] &&
                 resolution.hasVoted[delegate] &&
                 resolution.hasVotedYes[delegate]
             ) {
diff --git a/test/Integration.ts b/test/Integration.ts
index eeb77cd..29004df 100644
--- a/test/Integration.ts
+++ b/test/Integration.ts
@@ -291,6 +291,28 @@ describe("Integration", async () => {
       expect(resolutionResult).equal(true);
     });
 
+    it("bug #10", async () => {
+      await _makeContributor(user1, 65);
+      await _makeContributor(user2, 32);
+
+      await _delegate(user1, user2); // yesTotalVote == 33
+
+      const resolutionId = await _prepareResolution();
+      await _makeVotable(resolutionId);
+
+      await _vote(user1, false, resolutionId);
+      await _vote(user2, true, resolutionId);
+      await _vote(user1, true, resolutionId);
+
+      await _endResolution();
+
+      const resolutionResult = await resolutionManager.getResolutionResult(
+        resolutionId
+      );
+
+      expect(resolutionResult).equal(true);
+    });
+
     // Mint token to a multiple shareholder
     // Promote them to contributor
     // Self-delegate