--- a/src/ucx/Makefile	Mon Feb 23 22:28:44 2026 +0100
+++ b/src/ucx/Makefile	Tue Feb 24 12:28:58 2026 +0100
@@ -49,6 +49,7 @@
 SRC += properties.c
 SRC += iterator.c
 SRC += kv_list.c
+SRC += szmul.c
 
 OBJ = $(SRC:%.c=$(BUILD_ROOT)/build/ucx/%$(OBJ_EXT))