diff --git a/core/config.mk b/core/config.mk
index 0877ebd..8d2f96c 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -210,7 +210,7 @@
 MKTARBALL := build/tools/mktarball.sh
 TUNE2FS := tune2fs
 E2FSCK := e2fsck
-JARJAR := java -jar $(HOST_OUT_JAVA_LIBRARIES)/jarjar.jar
+JARJAR := $(HOST_OUT_JAVA_LIBRARIES)/jarjar.jar
 PROGUARD := external/proguard/bin/proguard.sh
 JAVATAGS := build/tools/java-event-log-tags.py
 
diff --git a/core/java.mk b/core/java.mk
index 6c8d3d5..9254dd8 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -198,7 +198,7 @@
 $(full_classes_jarjar_jar): PRIVATE_JARJAR_RULES := $(LOCAL_JARJAR_RULES)
 $(full_classes_jarjar_jar): $(full_classes_emma_jar) | $(JARJAR)
 	@echo JarJar: $@
-	$(hide) $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
+	$(hide) java -jar $(JARJAR) process $(PRIVATE_JARJAR_RULES) $< $@
 else
 $(full_classes_jarjar_jar): $(full_classes_emma_jar) | $(ACP)
 	@echo Copying: $@
@@ -206,7 +206,7 @@
 endif
 
 # Keep a copy of the jar just before proguard processing.
-$(full_classes_full_names_jar): $(full_classes_emma_jar) | $(ACP)
+$(full_classes_full_names_jar): $(full_classes_jarjar_jar) | $(ACP)
 	@echo Copying: $@
 	$(hide) $(ACP) $< $@