diff --git a/packager/media/base/protection_system_ids.h b/packager/media/base/protection_system_ids.h
index 7948e7ecebc..92dd923565b 100644
--- a/packager/media/base/protection_system_ids.h
+++ b/packager/media/base/protection_system_ids.h
@@ -19,11 +19,9 @@ const uint8_t kCommonSystemId[] = {0x10, 0x77, 0xef, 0xec, 0xc0, 0xb2,
                                    0x4d, 0x02, 0xac, 0xe3, 0x3c, 0x1e,
                                    0x52, 0xe2, 0xfb, 0x4b};
 
-// Unofficial FairPlay system id extracted from
-// https://forums.developer.apple.com/thread/6185.
-const uint8_t kFairPlaySystemId[] = {0x29, 0x70, 0x1F, 0xE4, 0x3C, 0xC7,
-                                     0x4A, 0x34, 0x8C, 0x5B, 0xAE, 0x90,
-                                     0xC7, 0x43, 0x9A, 0x47};
+const uint8_t kFairPlaySystemId[] = {0x94, 0xCE, 0x86, 0xFB, 0x07, 0xFF,
+                                     0x4F, 0x43, 0xAD, 0xB8, 0x93, 0xD2,
+                                     0xFA, 0x96, 0x8C, 0xA2};
 
 // Marlin Adaptive Streaming Specification – Simple Profile, V1.0.
 const uint8_t kMarlinSystemId[] = {0x5E, 0x62, 0x9A, 0xF5, 0x38, 0xDA,
diff --git a/packager/mpd/base/mpd_utils.cc b/packager/mpd/base/mpd_utils.cc
index 0f945f6538c..d3acfdc2665 100644
--- a/packager/mpd/base/mpd_utils.cc
+++ b/packager/mpd/base/mpd_utils.cc
@@ -333,12 +333,11 @@ namespace {
 // UUID for Marlin Adaptive Streaming Specification – Simple Profile from
 // https://dashif.org/identifiers/content_protection/.
 const char kMarlinUUID[] = "5e629af5-38da-4063-8977-97ffbd9902d4";
-// Unofficial FairPlay system id extracted from
-// https://forums.developer.apple.com/thread/6185.
-const char kFairPlayUUID[] = "29701fe4-3cc7-4a34-8c5b-ae90c7439a47";
+// String representation of media::kFairPlaySystemId.
+const char kFairPlayUUID[] = "94ce86fb-07ff-4f43-adb8-93d2fa968ca2";
 // String representation of media::kPlayReadySystemId.
 const char kPlayReadyUUID[] = "9a04f079-9840-4286-ab92-e65be0885f95";
-// It is RECOMMENDED to include the @value attribute with name and version "MSPR 2.0".
+// It is RECOMMENDED to include the @value attribute with name and version "MSPR 2.0".
 // See https://docs.microsoft.com/en-us/playready/specifications/mpeg-dash-playready#221-general.
 const char kContentProtectionValueMSPR20[] = "MSPR 2.0";