diff --git a/src/uhub.h b/src/uhub.h
index 2363b5f..4f54009 100644
--- a/src/uhub.h
+++ b/src/uhub.h
@@ -130,8 +130,8 @@
 
 #include "adcconst.h"
 
-#define MIN(a, b) (a < b ? a : b)
-#define MAX(a, b) (a > b ? a : b)
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
 
 #ifdef __cplusplus
 extern "C" {