diff --git a/.common/cpp/makefile b/.common/cpp/makefile
index 9b930ea..0f9f8ba 100644
--- a/.common/cpp/makefile
+++ b/.common/cpp/makefile
@@ -3,10 +3,10 @@ CXXFLAGS=-std=c++20 -Wall -Wextra
 
 COMMON_PATH=../.common/cpp
 
-catch2.o: $(COMMON_PATH)/catch_amalgamated.cpp $(COMMON_PATH)/catch_amalgamated.hpp
-	$(CXX) $(CXXFLAGS) -g -c $(COMMON_PATH)/catch_amalgamated.cpp -o catch2.o
+$(COMMON_PATH)/catch2.o: $(COMMON_PATH)/catch_amalgamated.cpp $(COMMON_PATH)/catch_amalgamated.hpp
+	$(CXX) $(CXXFLAGS) -g -c $(COMMON_PATH)/catch_amalgamated.cpp -o $(COMMON_PATH)/catch2.o
 
-%: catch2.o %.cpp
+%: $(COMMON_PATH)/catch2.o %.cpp
 	$(CXX) $(CXXFLAGS) -DTEST -g $^ -o $@
 
 format: