diff --git a/Makefile b/Makefile
deleted file mode 100644
index dd25390..0000000
--- a/Makefile
+++ /dev/null
@@ -1,17 +0,0 @@
-build: main.c bitmap.c
-	gcc main.c bitmap.c -o main -O3
-
-run: build
-	./main
-
-show: run
-	feh after.bmp
-
-convert: run
-	magick after.bmp after.png # for showing image in pdf
-
-zip: before.bmp main.pdf ../Makefile main.c bitmap.h bitmap.c
-	zip handin.zip before.bmp main.pdf ../Makefile main.c bitmap.h bitmap.c
-
-unzip: handin.zip
-	unzip handin.zip -d handin
diff --git a/exercise0/Makefile b/exercise0/Makefile
index bb69e69..8894f43 100644
--- a/exercise0/Makefile
+++ b/exercise0/Makefile
@@ -1 +1,17 @@
-include ../Makefile
+build: main.c bitmap.c
+	gcc main.c bitmap.c -o main -O2
+
+run: build
+	./main
+
+show: run
+	feh after.bmp
+
+convert: run
+	magick after.bmp after.png # for showing image in pdf
+
+zip: before.bmp main.pdf Makefile main.c bitmap.h bitmap.c
+	zip handin.zip before.bmp main.pdf Makefile main.c bitmap.h bitmap.c
+
+unzip: handin.zip
+	unzip handin.zip -d handin
diff --git a/exercise0/main b/exercise0/main
index 9d728cb..911c9b3 100755
Binary files a/exercise0/main and b/exercise0/main differ