diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ProvisioningController.java b/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ProvisioningController.java
index d1c392f1c..a7de6788c 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ProvisioningController.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/controllers/ProvisioningController.java
@@ -47,7 +47,7 @@ public class ProvisioningController {
     rateLimiters.getMessagesLimiter().validate(auth.getAccount().getUuid());
 
     if (!provisioningManager.sendProvisioningMessage(new ProvisioningAddress(destinationName, 0),
-        Base64.getDecoder().decode(message.getBody()))) {
+        Base64.getMimeDecoder().decode(message.getBody()))) {
       throw new WebApplicationException(Response.Status.NOT_FOUND);
     }
   }