diff --git a/index.d.ts b/index.d.ts
index 23f0f34a2d..64b5a70c53 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -39,6 +39,7 @@ declare namespace dashjs {
         setProtectionData(protData: ProtectionData): void;
         getSupportedKeySystemsFromContentProtection(cps: any[]): SupportedKeySystem[];
         getKeySystems(): KeySystem[];
+        setKeySystems(keySystems: KeySystem[]);
         stop(): void;
         reset(): void;
     }
diff --git a/src/streaming/protection/controllers/ProtectionController.js b/src/streaming/protection/controllers/ProtectionController.js
index 0239ddabb5..f6fa4d0d8f 100644
--- a/src/streaming/protection/controllers/ProtectionController.js
+++ b/src/streaming/protection/controllers/ProtectionController.js
@@ -761,6 +761,12 @@ function ProtectionController(config) {
         return protectionKeyController ? protectionKeyController.getKeySystems() : [];
     }
 
+    function setKeySystems(keySystems) {
+        if (protectionKeyController) {
+            protectionKeyController.setKeySystems(keySystems);
+        }
+    }
+
     instance = {
         initializeForMedia: initializeForMedia,
         createKeySession: createKeySession,
@@ -774,6 +780,7 @@ function ProtectionController(config) {
         setProtectionData: setProtectionData,
         getSupportedKeySystemsFromContentProtection: getSupportedKeySystemsFromContentProtection,
         getKeySystems: getKeySystems,
+        setKeySystems: setKeySystems,
         stop: stop,
         reset: reset
     };
diff --git a/src/streaming/protection/controllers/ProtectionKeyController.js b/src/streaming/protection/controllers/ProtectionKeyController.js
index 5bc26deead..f3ca487996 100644
--- a/src/streaming/protection/controllers/ProtectionKeyController.js
+++ b/src/streaming/protection/controllers/ProtectionKeyController.js
@@ -106,6 +106,19 @@ function ProtectionKeyController() {
         return keySystems;
     }
 
+    /**
+     * Sets the prioritized list of key systems to be supported
+     * by this player.
+     *
+     * @param {Array.<KeySystem>} newKeySystems the new prioritized
+     * list of key systems
+     * @memberof module:ProtectionKeyController
+     * @instance
+     */
+    function setKeySystems(newKeySystems) {
+        keySystems = newKeySystems;
+    }
+
     /**
      * Returns the key system associated with the given key system string
      * name (i.e. 'org.w3.clearkey')
@@ -195,19 +208,13 @@ function ProtectionKeyController() {
                     if (cp.schemeIdUri.toLowerCase() === ks.schemeIdURI) {
                         // Look for DRM-specific ContentProtection
                         let initData = ks.getInitData(cp);
-                        if (!!initData) {
-                            supportedKS.push({
-                                ks: keySystems[ksIdx],
-                                initData: initData,
-                                cdmData: ks.getCDMData(),
-                                sessionId: ks.getSessionId(cp)
-                            });
-                        } else if (this.isClearKey(ks)) {
-                            supportedKS.push({
-                                ks: ks,
-                                initData: null
-                            });
-                        }
+
+                        supportedKS.push({
+                            ks: keySystems[ksIdx],
+                            initData: initData,
+                            cdmData: ks.getCDMData(),
+                            sessionId: ks.getSessionId(cp)
+                        });
                     }
                 }
             }
@@ -336,6 +343,7 @@ function ProtectionKeyController() {
         isClearKey: isClearKey,
         initDataEquals: initDataEquals,
         getKeySystems: getKeySystems,
+        setKeySystems: setKeySystems,
         getKeySystemBySystemString: getKeySystemBySystemString,
         getSupportedKeySystemsFromContentProtection: getSupportedKeySystemsFromContentProtection,
         getSupportedKeySystems: getSupportedKeySystems,