diff --git a/src/server/api/routers/room.ts b/src/server/api/routers/room.ts
index 6508352..3868b2a 100644
--- a/src/server/api/routers/room.ts
+++ b/src/server/api/routers/room.ts
@@ -20,7 +20,7 @@ export const roomRouter = createTRPCRouter({
       const room = await ctx.db
         .insert(rooms)
         .values({
-          id: createId(),
+          id: `room_${createId()}`,
           userId: ctx.auth.userId,
           roomName: input.name,
           storyName: "First Story!",
@@ -119,7 +119,7 @@ export const roomRouter = createTRPCRouter({
 
           oldRoom &&
             (await ctx.db.insert(logs).values({
-              id: createId(),
+              id: `log_${createId()}`,
               userId: ctx.auth.userId,
               roomId: input.roomId,
               scale: oldRoom.scale,
diff --git a/src/server/api/routers/vote.ts b/src/server/api/routers/vote.ts
index f797c62..fa53e09 100644
--- a/src/server/api/routers/vote.ts
+++ b/src/server/api/routers/vote.ts
@@ -37,31 +37,24 @@ export const voteRouter = createTRPCRouter({
   set: protectedProcedure
     .input(z.object({ value: z.string(), roomId: z.string() }))
     .mutation(async ({ ctx, input }) => {
-      const updateResult = await ctx.db
-        .update(votes)
-        .set({
+      const upsertResult = await ctx.db
+        .insert(votes)
+        .values({
+          id: `vote_${createId()}`,
           value: input.value,
           userId: ctx.auth.userId,
           roomId: input.roomId,
         })
-        .where(eq(votes.userId, ctx.auth.userId))
-        .returning();
-
-      let success = updateResult.length > 0;
-
-      if (!success) {
-        const vote = await ctx.db
-          .insert(votes)
-          .values({
-            id: createId(),
+        .onConflictDoUpdate({
+          target: [votes.userId, votes.roomId],
+          set: {
             value: input.value,
             userId: ctx.auth.userId,
             roomId: input.roomId,
-          })
-          .returning();
+          },
+        });
 
-        success = vote.length > 0;
-      }
+      let success = upsertResult.rowCount > 0;
 
       if (success) {
         await invalidateCache(`kv_votecount`);
diff --git a/src/server/schema.ts b/src/server/schema.ts
index 8c6e4a2..34cecc5 100644
--- a/src/server/schema.ts
+++ b/src/server/schema.ts
@@ -5,6 +5,7 @@ import {
   boolean,
   json,
   index,
+  unique,
 } from "drizzle-orm/pg-core";
 import { relations } from "drizzle-orm";
 
@@ -37,6 +38,7 @@ export const votes = pgTable(
   (table) => {
     return {
       userIdx: index("user_idx").on(table.userId),
+      unq: unique().on(table.userId, table.roomId),
     };
   }
 );