diff --git a/Makefile b/Makefile
index c6d4b30..7c27449 100644
--- a/Makefile
+++ b/Makefile
@@ -2,10 +2,9 @@ GTK_PACKAGES=gdk-pixbuf-2.0 gtk+-2.0
 GTK_CFLAGS=$(shell pkg-config --cflags $(GTK_PACKAGES))
 GTK_LIBS=$(shell pkg-config --libs $(GTK_PACKAGES))
 
-# CFLAGS=-Wall -g -O2 -std=c11 -pthread $(GTK_CFLAGS)
 CFLAGS=-Wall -g -O2 $(GTK_CFLAGS)
 
-LIBS=$(GTK_LIBS) -lm
+LIBS=$(GTK_LIBS)
 
 PROGS=balls