diff --git a/core/package_internal.mk b/core/package_internal.mk
index 5dac455..016e23f 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -402,12 +402,12 @@
 else
 	$(add-dex-to-package)
 endif
-	$(sign-package)
 ifdef LOCAL_DEX_PREOPT
 ifneq (nostripping,$(LOCAL_DEX_PREOPT))
 	$(call dexpreopt-remove-classes.dex,$@)
 endif
 endif
+	$(sign-package)
 	@# Alignment must happen after all other zip operations.
 	$(align-package)
 
diff --git a/core/prebuilt_internal.mk b/core/prebuilt_internal.mk
index d544619..8595bce 100644
--- a/core/prebuilt_internal.mk
+++ b/core/prebuilt_internal.mk
@@ -193,17 +193,18 @@
 $(built_module) : PRIVATE_PAGE_ALIGN_JNI_SHARED_LIBRARIES := $(LOCAL_PAGE_ALIGN_JNI_SHARED_LIBRARIES)
 $(built_module) : $(my_prebuilt_src_file) | $(ACP) $(ZIPALIGN) $(SIGNAPK_JAR)
 	$(transform-prebuilt-to-target)
+ifneq ($(LOCAL_CERTIFICATE),PRESIGNED)
+	@# Only strip out files if we can re-sign the package.
 ifdef extracted_jni_libs
 	$(hide) zip -d $@ 'lib/*.so'  # strip embedded JNI libraries.
 endif
-ifneq ($(LOCAL_CERTIFICATE),PRESIGNED)
-	$(sign-package)
-endif
 ifdef LOCAL_DEX_PREOPT
 ifneq (nostripping,$(LOCAL_DEX_PREOPT))
 	$(call dexpreopt-remove-classes.dex,$@)
 endif
 endif
+	$(sign-package)
+endif
 	$(align-package)
 
 ###############################