diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index 7ee8f60..4318c39 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -11601,7 +11601,7 @@
     private void toUriInner(StringBuilder uri, String scheme, String defAction,
             String defPackage, int flags) {
         if (scheme != null) {
-            uri.append("scheme=").append(scheme).append(';');
+            uri.append("scheme=").append(Uri.encode(scheme)).append(';');
         }
         if (mAction != null && !mAction.equals(defAction)) {
             uri.append("action=").append(Uri.encode(mAction)).append(';');