--- a/tests/Makefile	Sun Dec 22 22:53:53 2024 +0100
+++ b/tests/Makefile	Sun Dec 22 23:10:07 2024 +0100
@@ -70,7 +70,7 @@
 
 $(TEST_DIR)/test_hash_key$(OBJ_EXT): test_hash_key.c ../src/cx/test.h \
  ../src/cx/common.h ../src/cx/hash_key.h ../src/cx/string.h \
- ../src/cx/allocator.h
+ ../src/cx/allocator.h ../src/cx/string.h
 	@echo "Compiling $<"
 	$(CC) -o $@ $(CFLAGS) -I../src -c $<