diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -5,3 +5,10 @@
   <https://download.bitcoinabc.org/0.25.7/>
 
 This release includes the following features and fixes:
+- Redefine the BIP71 MIME types for eCash payment request messages to:
+
+    | Message        | Type/Subtype                     |
+    |----------------|----------------------------------|
+    | PaymentRequest | application/ecash-paymentrequest |
+    | Payment        | application/ecash-payment        |
+    | PaymentACK     | application/ecash-paymentack     |
diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp
--- a/src/qt/paymentserver.cpp
+++ b/src/qt/paymentserver.cpp
@@ -50,10 +50,9 @@
 const char *BIP70_MESSAGE_PAYMENTACK = "PaymentACK";
 const char *BIP70_MESSAGE_PAYMENTREQUEST = "PaymentRequest";
 // BIP71 payment protocol media types
-const char *BIP71_MIMETYPE_PAYMENT = "application/bitcoincash-payment";
-const char *BIP71_MIMETYPE_PAYMENTACK = "application/bitcoincash-paymentack";
-const char *BIP71_MIMETYPE_PAYMENTREQUEST =
-    "application/bitcoincash-paymentrequest";
+const char *BIP71_MIMETYPE_PAYMENT = "application/ecash-payment";
+const char *BIP71_MIMETYPE_PAYMENTACK = "application/ecash-paymentack";
+const char *BIP71_MIMETYPE_PAYMENTREQUEST = "application/ecash-paymentrequest";
 #endif
 
 //