1 files changed, 2 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 8d04e29..cb2577a 100644
--- a/Makefile
+++ b/Makefile
@@ -3,10 +3,10 @@ FILES=blocksplitter.c cache.c deflate.c gzip_container.c hash.c katajainen.c lz7
 all: sfnt2woff-zopfli woff2sfnt-zopfli
 
 sfnt2woff-zopfli: sfnt2woff.c $(FILES) Makefile
-	$(CC) $(LDFLAGS) $(FILES) $< -o $@ -lz
+	$(CC) $(LDFLAGS) $(FILES) $< -o $@ -lz -lm
 
 woff2sfnt-zopfli: woff2sfnt.c $(FILES) Makefile
-	$(CC) $(LDFLAGS) $(FILES) $< -o $@ -lz
+	$(CC) $(LDFLAGS) $(FILES) $< -o $@ -lz -lm
 
 clean:
 	$(RM) -r *.o *.dSYM sfnt2woff-zopfli woff2sfnt-zopfli *.gch *.out