1 files changed, 1 insertions, 1 deletions

diff --git a/il-gen.c b/il-gen.c
index 29f0526..61bc98d 100644
--- a/il-gen.c
+++ b/il-gen.c
@@ -41,7 +41,7 @@ enum {
     REG_ST2,
 };
 
-int reg_classes[NB_REGS] = {
+const int reg_classes[NB_REGS] = {
     /* ST0 */ RC_ST | RC_ST0,
     /* ST1 */ RC_ST | RC_ST1,
     /* ST2 */ RC_ST,