diff --git a/functions/src/on-create-bet.ts b/functions/src/on-create-bet.ts
index 0175a63e..0881abe5 100644
--- a/functions/src/on-create-bet.ts
+++ b/functions/src/on-create-bet.ts
@@ -326,7 +326,7 @@ async function handleBettingStreakBadgeAward(
   // TODO: check if already awarded 50th streak as well
   if (newBettingStreak === 1 && alreadyHasBadgeForFirstStreak) return
 
-  if (newBettingStreak in streakerBadgeRarityThresholds) {
+  if (streakerBadgeRarityThresholds.includes(newBettingStreak)) {
     const badge = {
       type: 'STREAKER',
       name: 'Streaker',
diff --git a/functions/src/on-create-contract.ts b/functions/src/on-create-contract.ts
index 13a84575..43a66719 100644
--- a/functions/src/on-create-contract.ts
+++ b/functions/src/on-create-contract.ts
@@ -50,7 +50,7 @@ async function handleMarketCreatorBadgeAward(contractCreator: User) {
       .where('creatorId', '==', contractCreator.id)
       .where('resolution', '!=', 'CANCEL')
   )
-  if (contracts.length in marketCreatorBadgeRarityThresholds) {
+  if (marketCreatorBadgeRarityThresholds.includes(contracts.length)) {
     const badge = {
       type: 'MARKET_CREATOR',
       name: 'Market Creator',