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-rw-r--r--libmaple/util.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libmaple/util.h b/libmaple/util.h
index 1e47d45..7ae8e02 100644
--- a/libmaple/util.h
+++ b/libmaple/util.h
@@ -46,7 +46,7 @@ extern "C"{
#define BIT_MASK_SHIFT(mask, shift) ((mask) << (shift))
/** Bits m to n of x */
#define GET_BITS(x, m, n) ((((uint32)x) << (31 - (n))) >> ((31 - (n)) + (m)))
-#define IS_POWER_OF_TWO(v) (v && !(v & (v - 1)))
+#define IS_POWER_OF_TWO(v) ((v) && !((v) & ((v) - 1)))
/*
* Failure routines