1 files changed, 3 insertions, 3 deletions
diff --git a/lzf_c.c b/lzf_c.c
index 97ac814..dd40a27 100644
--- a/lzf_c.c
+++ b/lzf_c.c
@@ -38,7 +38,7 @@
  */
 #define FRST(p) (((p[0]) << 8) + p[1])
 #define NEXT(v,p) (((v) << 8) + p[2])
-#define IDX(h) ((((h ^ (h << 4)) >> (3*8 - HLOG)) + h*3) & (HSIZE - 1))
+#define IDX(h) ((((h ^ (h << 5)) >> (3*8 - HLOG)) + h*3) & (HSIZE - 1))
 /*
  * IDX works because it is very similar to a multiplicative hash, e.g.
  * (h * 57321 >> (3*8 - HLOG))
@@ -49,8 +49,8 @@
 #if 0
 /* original lzv-like hash function */
 # define FRST(p) (p[0] << 5) ^ p[1]
-# define NEXT(v,p) (v << 5) ^ p[2]
-# define IDX(h) (h) & (HSIZE - 1)
+# define NEXT(v,p) ((v) << 5) ^ p[2]
+# define IDX(h) ((h) & (HSIZE - 1))
 #endif
 
 #define        MAX_LIT        (1 <<  5)