diff --git a/make/common/shared/Defs-java.gmk b/make/common/shared/Defs-java.gmk
index d4a27e3b6c6d472fc85a76810ce29f85b441497d..9eba913429b041129189b634f87ff0150071ad23 100644
--- a/make/common/shared/Defs-java.gmk
+++ b/make/common/shared/Defs-java.gmk
@@ -218,9 +218,7 @@ ifeq ($(JAVAC_WARNINGS_FATAL), true)
   BOOT_JAVACFLAGS  += -Werror
 endif
 
-BOOT_SOURCE_LANGUAGE_VERSION = 6
-BOOT_TARGET_CLASS_VERSION = 6
-BOOT_JAVACFLAGS  += -encoding ascii -source $(BOOT_SOURCE_LANGUAGE_VERSION) -target $(BOOT_TARGET_CLASS_VERSION)
+BOOT_JAVACFLAGS  += -encoding ascii
 BOOT_JAR_JFLAGS += $(JAR_JFLAGS)
 
 BOOT_JAVACFLAGS  += $(NO_PROPRIETARY_API_WARNINGS)