diff --git a/lib/alloc/calloc.h b/lib/alloc/calloc.h
index 5c093434..fb170e6f 100644
--- a/lib/alloc/calloc.h
+++ b/lib/alloc/calloc.h
@@ -11,7 +11,10 @@
 #include <stdlib.h>
 
 
-#define CALLOC(n, type)   ((type *) calloc(n, sizeof(type)))
+#define CALLOC(n, type)                                                       \
+(                                                                             \
+	(type *) calloc(n, sizeof(type))                                      \
+)
 
 
 #endif  // include guard
diff --git a/lib/alloc/malloc.h b/lib/alloc/malloc.h
index 5badeebb..21478255 100644
--- a/lib/alloc/malloc.h
+++ b/lib/alloc/malloc.h
@@ -13,7 +13,10 @@
 #include "attr.h"
 
 
-#define MALLOC(n, type)   ((type *) mallocarray(n, sizeof(type)))
+#define MALLOC(n, type)                                                       \
+(                                                                             \
+	(type *) mallocarray(n, sizeof(type))                                 \
+)
 
 
 ATTR_MALLOC(free)
diff --git a/lib/alloc/x/xcalloc.h b/lib/alloc/x/xcalloc.h
index b78d104f..04cf1ad4 100644
--- a/lib/alloc/x/xcalloc.h
+++ b/lib/alloc/x/xcalloc.h
@@ -14,7 +14,10 @@
 #include "attr.h"
 
 
-#define XCALLOC(n, type)  ((type *) xcalloc(n, sizeof(type)))
+#define XCALLOC(n, type)                                                      \
+(                                                                             \
+	(type *) xcalloc(n, sizeof(type))                                     \
+)
 
 
 ATTR_MALLOC(free)
diff --git a/lib/alloc/x/xmalloc.h b/lib/alloc/x/xmalloc.h
index 967e18bc..02fde662 100644
--- a/lib/alloc/x/xmalloc.h
+++ b/lib/alloc/x/xmalloc.h
@@ -14,7 +14,10 @@
 #include "attr.h"
 
 
-#define XMALLOC(n, type)  ((type *) xmallocarray(n, sizeof(type)))
+#define XMALLOC(n, type)                                                      \
+(                                                                             \
+	(type *) xmallocarray(n, sizeof(type))                                \
+)
 
 
 ATTR_MALLOC(free)
diff --git a/lib/must_be.h b/lib/must_be.h
index a7365cba..6ae6c799 100644
--- a/lib/must_be.h
+++ b/lib/must_be.h
@@ -90,10 +90,28 @@
  */
 
 
-#define is_same_type(a, b)    __builtin_types_compatible_p(a, b)
-#define is_same_typeof(a, b)  is_same_type(typeof(a), typeof(b))
-#define is_array(a)           (!is_same_typeof((a), &(a)[0]))
-#define must_be_array(a)      must_be(is_array(a))
+#define is_same_type(a, b)                                                    \
+(                                                                             \
+	__builtin_types_compatible_p(a, b)                                    \
+)
+
+
+#define is_same_typeof(a, b)                                                  \
+(                                                                             \
+	is_same_type(typeof(a), typeof(b))                                    \
+)
+
+
+#define is_array(a)                                                           \
+(                                                                             \
+	!is_same_typeof(a, &(a)[0])                                           \
+)
+
+
+#define must_be_array(a)                                                      \
+(                                                                             \
+	must_be(is_array(a))                                                  \
+)
 
 
 #endif  // include guard