diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index f79bd8399..a728068b6 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -308,11 +308,11 @@ ifeq ($(TARGET_CORE_JARS),)
 $(error TARGET_CORE_JARS is empty; cannot initialize PRODUCT_BOOT_JARS variable)
 endif
 
-# The order matters
+# The order matters for runtime class lookup performance.
 PRODUCT_BOOT_JARS := \
     $(TARGET_CORE_JARS) \
-    ext \
     framework \
+    ext \
     telephony-common \
     voip-common \
     ims-common