diff --git a/Makefile b/Makefile
index 3ed925f..1d6e4aa 100644
--- a/Makefile
+++ b/Makefile
@@ -1,23 +1,24 @@
 CC = gcc
-CCFLAGS = -ansi -Wall -Wshadow -O2 $(EXTRAS)
+CCFLAGS = -ansi -Wall -Wshadow -O2
+LFLAGS = -lm
 
 
 all: test bench example example2
 
 
 test: test.o tinyexpr.o
-	$(CC) $(CCFLAGS) -o $@ $^
+	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
 	./$@
 
 
 bench: benchmark.o tinyexpr.o
-	$(CC) $(CCFLAGS) -o $@ $^
+	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
 
 example: example.o tinyexpr.o
-	$(CC) $(CCFLAGS) -o $@ $^
+	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
 
 example2: example2.o tinyexpr.o
-	$(CC) $(CCFLAGS) -o $@ $^
+	$(CC) $(CCFLAGS) -o $@ $^ $(LFLAGS)
 
 .c.o:
 	$(CC) -c $(CCFLAGS) $< -o $@