--- a/src/cx/printf.h	Fri Apr 21 20:17:09 2023 +0200
+++ b/src/cx/printf.h	Fri Apr 21 20:28:55 2023 +0200
@@ -96,7 +96,7 @@
  */
 __attribute__((__nonnull__(1, 2), __format__(printf, 2, 3)))
 cxmutstr cx_asprintf_a(
-        CxAllocator *allocator,
+        CxAllocator const *allocator,
         char const *fmt,
         ...
 );
@@ -129,7 +129,7 @@
  */
 __attribute__((__nonnull__))
 cxmutstr cx_vasprintf_a(
-        CxAllocator *allocator,
+        CxAllocator const *allocator,
         char const *fmt,
         va_list ap
 );