diff --git a/app/src/main/java/org/thoughtcrime/securesms/jobs/PushSendJob.java b/app/src/main/java/org/thoughtcrime/securesms/jobs/PushSendJob.java
index f13cfa2390..8580aaad0d 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/jobs/PushSendJob.java
+++ b/app/src/main/java/org/thoughtcrime/securesms/jobs/PushSendJob.java
@@ -594,8 +594,13 @@ public abstract class PushSendJob extends SendJob {
       SignalDatabase.messages().markAsRateLimited(messageId);
     }
 
-    if (proofRequired.getOptions().contains(ProofRequiredException.Option.RECAPTCHA)) {
-      Log.i(TAG, "[Proof Required] ReCAPTCHA required.");
+    final Optional<ProofRequiredException.Option> captchaRequired =
+        proofRequired.getOptions().stream()
+                     .filter(option -> option.equals(ProofRequiredException.Option.RECAPTCHA) || option.equals(ProofRequiredException.Option.CAPTCHA))
+                     .findFirst();
+
+    if (captchaRequired.isPresent()) {
+      Log.i(TAG, "[Proof Required] " + captchaRequired.get() + " required.");
       SignalStore.rateLimit().markNeedsRecaptcha(proofRequired.getToken());
 
       if (recipient != null) {
diff --git a/libsignal-service/src/main/java/org/whispersystems/signalservice/api/push/exceptions/ProofRequiredException.java b/libsignal-service/src/main/java/org/whispersystems/signalservice/api/push/exceptions/ProofRequiredException.java
index e19e5fa415..ac5526d2be 100644
--- a/libsignal-service/src/main/java/org/whispersystems/signalservice/api/push/exceptions/ProofRequiredException.java
+++ b/libsignal-service/src/main/java/org/whispersystems/signalservice/api/push/exceptions/ProofRequiredException.java
@@ -44,6 +44,8 @@ public class ProofRequiredException extends NonSuccessfulResponseCodeException {
       switch (raw) {
         case "recaptcha":
           options.add(Option.RECAPTCHA);
+        case "captcha":
+          options.add(Option.CAPTCHA);
           break;
         case "pushChallenge":
           options.add(Option.PUSH_CHALLENGE);
@@ -58,6 +60,6 @@ public class ProofRequiredException extends NonSuccessfulResponseCodeException {
   }
 
   public enum Option {
-    RECAPTCHA, PUSH_CHALLENGE
+    @Deprecated RECAPTCHA, CAPTCHA, PUSH_CHALLENGE
   }
 }
diff --git a/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/SubmitRecaptchaChallengePayload.java b/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/SubmitRecaptchaChallengePayload.java
index bd35dc81a1..2218dab3be 100644
--- a/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/SubmitRecaptchaChallengePayload.java
+++ b/libsignal-service/src/main/java/org/whispersystems/signalservice/internal/push/SubmitRecaptchaChallengePayload.java
@@ -16,7 +16,7 @@ class SubmitRecaptchaChallengePayload {
   public SubmitRecaptchaChallengePayload() {}
 
   public SubmitRecaptchaChallengePayload(String challenge, String recaptchaToken) {
-    this.type    = "recaptcha";
+    this.type    = "captcha";
     this.token   = challenge;
     this.captcha = recaptchaToken;
   }