1 files changed, 1 insertions, 1 deletions

diff --git a/src/common.h b/src/common.h
index 57d47a0..d1c8397 100644
--- a/src/common.h
+++ b/src/common.h
@@ -80,7 +80,7 @@ static inline int bitcount(unsigned v)
 
 /* boost-style foreach bit */
 #define foreach_bit(i, m)                                               \
-        for (i = firstbit(m); i >= 0; i = firstbit((m) & (~0U << i + 1)))
+        for (i = firstbit(m); i >= 0; i = firstbit((m) & (~0U << (i + 1))))
 
 /* robust system ioctl calls */
 #define SYSCALL(call) while (((call) == -1) && (errno == EINTR))