1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 12a2278fe..e91e6e22d 100644
--- a/Makefile
+++ b/Makefile
@@ -53,7 +53,7 @@ tools:
 
 
 $(crystal_obj):   RGBASMFLAGS = -D _CRYSTAL
-$(crystal11_obj): RGBASMFLAGS = -D _CRYSTAL -D CRYSTAL11
+$(crystal11_obj): RGBASMFLAGS = -D _CRYSTAL -D _CRYSTAL11
 
 # The dep rules have to be explicit or else missing files won't be reported.
 # As a side effect, they're evaluated immediately instead of when the rule is invoked.