diff --git a/core/java/android/content/res/StringBlock.java b/core/java/android/content/res/StringBlock.java
index 0070a6f920db..5e84521714ee 100644
--- a/core/java/android/content/res/StringBlock.java
+++ b/core/java/android/content/res/StringBlock.java
@@ -105,7 +105,7 @@ public CharSequence get(int idx) {
     @Nullable
     public CharSequence getSequence(int idx) {
         synchronized (this) {
-            if (mStrings != null) {
+            if (mStrings != null && idx < mStrings.length) {
                 CharSequence res = mStrings[idx];
                 if (res != null) {
                     return res;