diff --git a/Makefile b/Makefile
index 2c43fd5..1c516c0 100644
--- a/Makefile
+++ b/Makefile
@@ -3,12 +3,13 @@ CCFLAGS = -std=c++14 -Wall
 
 all: bin/imageviewer bin/smooth bin/edgedetect
 
+rebuild: clean all
+
 imageviewer: bin/imageviewer
 smooth: bin/smooth
 edgedetect: bin/edgedetect
 
 %.o: src/%.cpp include/bild.hpp
-	@mkdir -p $(@D)
 	$(CC) -Iinclude -c $< -o $@ $(CCFLAGS)
 
 bin/%: %.o bild.o