diff --git a/core/combo/javac.mk b/core/combo/javac.mk
index 8c24e4b..528e556 100644
--- a/core/combo/javac.mk
+++ b/core/combo/javac.mk
@@ -9,7 +9,7 @@
 #   COMMON_JAVAC -- Java compiler command with common arguments
 #
 
-ifeq ($(EXPERIMENTAL_USE_JAVA7),)
+ifneq ($(LEGACY_USE_JAVA6),)
 common_flags := -target 1.5 -Xmaxerrs 9999999
 else
 common_flags := -source 1.7 -target 1.7 -Xmaxerrs 9999999