diff --git a/ujit_core.h b/ujit_core.h
index cf82dfe5af..c90ade884d 100644
--- a/ujit_core.h
+++ b/ujit_core.h
@@ -64,7 +64,7 @@ typedef struct BlockId
 static const blockid_t BLOCKID_NULL = { 0, 0 };
 
 /// Branch code shape enumeration
-typedef enum : int8_t
+typedef enum branch_shape
 {
     SHAPE_NEXT0,  // Target 0 is next
     SHAPE_NEXT1,  // Target 1 is next