diff --git a/Makefile b/Makefile
index 3909f7e..bb11865 100644
--- a/Makefile
+++ b/Makefile
@@ -111,7 +111,7 @@ LDFLAGS := -shared -arch i386 -arch x86_64
 else ifeq ($(OSTYPE), Windows)
 LDFLAGS := -shared -static-libgcc
 else
-LDFLAGS := -shared
+LDFLAGS := -shared -lm
 endif
 
 # ----------