diff --git a/libs/hwui/ProgramCache.h b/libs/hwui/ProgramCache.h
index cedd854b..ee76f22 100644
--- a/libs/hwui/ProgramCache.h
+++ b/libs/hwui/ProgramCache.h
@@ -40,7 +40,7 @@
  */
 class ProgramCache {
 public:
-    explicit ProgramCache(Extensions& extensions);
+    explicit ProgramCache(const Extensions& extensions);
     ~ProgramCache();
 
     Program* get(const ProgramDescription& description);