diff --git a/Makefile b/Makefile
index 3974d03..daa22d5 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,7 @@ LINKFLAGS +=    -L${PREFIX}/lib
 LINKFLAGS +=    `imlib2-config --libs`
 LINKFLAGS +=    `pkg-config  --libs oggplay` -lvpx
 LINKFLAGS +=    ${LDFLAGS}
+LINKFLAGS +=    -lm
 
 all: ${PROG}