diff --git a/toolkit/content/jar.mn b/toolkit/content/jar.mn
index 4c862641d0..3a38b1815d 100644
--- a/toolkit/content/jar.mn
+++ b/toolkit/content/jar.mn
@@ -116,7 +116,6 @@ toolkit.jar:
 #ifdef XP_MACOSX
    content/global/macWindowMenu.js
 #endif
-   content/global/gmp-sources/openh264.json    (gmp-sources/openh264.json)
    content/global/gmp-sources/widevinecdm.json (gmp-sources/widevinecdm.json)
 
 # Third party files
diff --git a/toolkit/modules/GMPInstallManager.sys.mjs b/toolkit/modules/GMPInstallManager.sys.mjs
index a4cb2948b7..d5efa45a0e 100644
--- a/toolkit/modules/GMPInstallManager.sys.mjs
+++ b/toolkit/modules/GMPInstallManager.sys.mjs
@@ -35,10 +35,6 @@ function getScopedLogger(prefix) {
 }
 
 const LOCAL_GMP_SOURCES = [
-  {
-    id: "gmp-gmpopenh264",
-    src: "chrome://global/content/gmp-sources/openh264.json",
-  },
   {
     id: "gmp-widevinecdm",
     src: "chrome://global/content/gmp-sources/widevinecdm.json",
@@ -376,6 +372,9 @@ GMPInstallManager.prototype = {
    *                 downloaderr, verifyerr or previouserrorencountered
    */
   installAddon(gmpAddon) {
+    if (gmpAddon.isOpenH264) {
+      return Promise.reject({ type: "disabled" });
+    }
     if (this._deferred) {
       let log = getScopedLogger("GMPInstallManager.installAddon");
       log.error("previous error encountered");