diff --git a/core/dex_preopt.mk b/core/dex_preopt.mk
index dd31999..593ad66 100644
--- a/core/dex_preopt.mk
+++ b/core/dex_preopt.mk
@@ -62,7 +62,9 @@
 
 boot_zip := $(PRODUCT_OUT)/boot.zip
 bootclasspath_jars := $(DEXPREOPT_BOOTCLASSPATH_DEX_FILES)
-system_server_jars := $(foreach m,$(PRODUCT_SYSTEM_SERVER_JARS),$(PRODUCT_OUT)/system/framework/$(m).jar)
+system_server_jars := \
+  $(foreach m,$(PRODUCT_SYSTEM_SERVER_JARS),\
+    $(PRODUCT_OUT)/system/framework/$(call word-colon,2,$(m)).jar)
 
 $(boot_zip): PRIVATE_BOOTCLASSPATH_JARS := $(bootclasspath_jars)
 $(boot_zip): PRIVATE_SYSTEM_SERVER_JARS := $(system_server_jars)
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index a23bae2..f5d473c 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -70,9 +70,10 @@
 # /data. If we don't do this they will need to be extracted which is not favorable for RAM usage
 # or performance. If my_preopt_for_extracted_apk is true, we ignore the only preopt boot image
 # options.
+system_server_jars := $(foreach m,$(PRODUCT_SYSTEM_SERVER_JARS),$(call word-colon,2,$(m)))
 ifneq (true,$(my_preopt_for_extracted_apk))
   ifeq (true,$(WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY))
-    ifeq ($(filter $(PRODUCT_SYSTEM_SERVER_JARS) $(DEXPREOPT_BOOT_JARS_MODULES),$(LOCAL_MODULE)),)
+    ifeq ($(filter $(system_server_jars) $(DEXPREOPT_BOOT_JARS_MODULES),$(LOCAL_MODULE)),)
       LOCAL_DEX_PREOPT :=
     endif
   endif
diff --git a/core/product_config.mk b/core/product_config.mk
index eb6f69f..5c85fb8 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -231,12 +231,23 @@
 PRODUCT_AAPT_CONFIG_SP := $(PRODUCT_AAPT_CONFIG)
 PRODUCT_AAPT_CONFIG := $(subst $(space),$(comma),$(PRODUCT_AAPT_CONFIG))
 
+###########################################################
+## Add 'platform:' prefix to jars not in <apex>:<module> format.
+##
+## This makes sure that a jar corresponds to ConfigureJarList format of <apex> and <module> pairs
+## where needed.
+##
+## $(1): a list of jars either in <module> or <apex>:<module> format
+###########################################################
+
+define qualify-platform-jars
+  $(foreach jar,$(1),$(if $(findstring :,$(jar)),,platform:)$(jar))
+endef
+
 # Extra boot jars must be appended at the end after common boot jars.
 PRODUCT_BOOT_JARS += $(PRODUCT_BOOT_JARS_EXTRA)
 
-# Add 'platform:' prefix to unqualified boot jars
-PRODUCT_BOOT_JARS := $(foreach pair,$(PRODUCT_BOOT_JARS), \
-  $(if $(findstring :,$(pair)),,platform:)$(pair))
+PRODUCT_BOOT_JARS := $(call qualify-platform-jars,$(PRODUCT_BOOT_JARS))
 
 # Replaces references to overridden boot jar modules in a boot jars variable.
 # $(1): Name of a boot jars variable with <apex>:<jar> pairs.
@@ -254,6 +265,8 @@
 # The extra system server jars must be appended at the end after common system server jars.
 PRODUCT_SYSTEM_SERVER_JARS += $(PRODUCT_SYSTEM_SERVER_JARS_EXTRA)
 
+PRODUCT_SYSTEM_SERVER_JARS := $(call qualify-platform-jars,$(PRODUCT_SYSTEM_SERVER_JARS))
+
 ifndef PRODUCT_SYSTEM_NAME
   PRODUCT_SYSTEM_NAME := $(PRODUCT_NAME)
 endif