diff --git a/GNUmakefile b/GNUmakefile
index 94e3df3..d03d241 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -4,14 +4,14 @@ OBJ = creatwth.o detours.o disasm.o modules.o
 all: timeskew.zip
 
 %.o: $(SRCD)/%.cpp
-	g++ -c -w -O3 -isystem$(SRCD) $< -o $@
+	$(CXX) -c -w -O3 -isystem$(SRCD) $< -o $@
 
 timeskew.dll: timeskew.cpp $(OBJ)
-	g++ -shared -o $@ -isystemDetours/src $^ -lmincore -luser32 -static-libgcc -static-libstdc++ -static
+	$(CXX) -shared -o $@ -isystemDetours/src $^ -lmincore -luser32 -static-libgcc -static-libstdc++ -static
 
 timeskew.exe: withdll.cpp $(OBJ)
 	@# For some reason, compiling Detours to object files first lead to multiple definitions of StringCchPrintfA, StringCchPrintfW
-	g++ -o $@ -isystemDetours/src $^ -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++ -static
+	$(CXX) -o $@ -isystemDetours/src $^ -Wl,--allow-multiple-definition -static-libgcc -static-libstdc++ -static
 
 timeskew.zip: timeskew.exe timeskew.dll
 	zip -r $@ $^