diff --git a/Makefile b/Makefile
index 6ff4e80..c8f10ab 100644
--- a/Makefile
+++ b/Makefile
@@ -1,29 +1,22 @@
 CCFLAGS = -Wall -Wshadow -O2 -g
-LFLAGS = -lm
+LDLIBS = -lm
 
 
 all: test example1 example2 example3 example4
 
 
 test: test.o genann.o
-	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
-	./$@
 
+check: test
+	./$^
 
 example1: example1.o genann.o
-	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
 
 example2: example2.o genann.o
-	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
 
 example3: example3.o genann.o
-	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
 
 example4: example4.o genann.o
-	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
-
-.c.o:
-	$(CC) -c $(CCFLAGS) $< -o $@
 
 
 clean: