diff --git a/miscellaneous.h b/miscellaneous.h
index 99e6339e18..ecf9449025 100644
--- a/miscellaneous.h
+++ b/miscellaneous.h
@@ -123,7 +123,7 @@ typedef struct
 
 #define BIT64_SET(a, bit)    ((a) |=  (1ULL << ((bit) & 63)))
 #define BIT64_CLEAR(a, bit)  ((a) &= ~(1ULL << ((bit) & 63)))
-#define BIT64_GET(a, bit)    ((a) &   (1ULL << ((bit) & 63)))
+#define BIT64_GET(a, bit) (!!((a) &   (1ULL << ((bit) & 63))))
 #define BIT64_CLEAR_ALL(a)   ((a) = 0)
 
 #define BIT_SET(a, bit)   ((a)[(bit) >> 3] |=  (1 << ((bit) & 7)))