diff --git a/librz/include/sflib/common/sftypes.h b/librz/include/sflib/common/sftypes.h
index 734c70e42b..56d3f26857 100644
--- a/librz/include/sflib/common/sftypes.h
+++ b/librz/include/sflib/common/sftypes.h
@@ -196,9 +196,11 @@ typedef struct
 	do { \
 		unsigned int __i; \
 		fd_set *__arr = (set); \
-		for (__i = 0; __i < sizeof(fd_set) / sizeof(fd_mask); ++__i) \
-			__FDS_BITS(__arr) \
-			[__i] = 0; \
+		for (__i = 0; __i < sizeof(fd_set) / sizeof(fd_mask); ++__i) { \
+			/* clang-format off */ \
+			__FDS_BITS(__arr)[__i] = 0; \
+			/* clang-format on */ \
+		} \
 	} while (0)
 
 #define FD_SET(d, set)   (__FDS_BITS(set)[__FDELT(d)] |= FDMASK(d))