diff --git a/.gitignore b/.gitignore
index 02bf6d2..189881e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@
 /writeimage
 *.fasl
 *.so
+/.emacs.desktop*
diff --git a/Makefile b/Makefile
index 66dacc0..6ecea81 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ game.so: game.cpp game.h lib.h sprites.h game_data.h Makefile
 	mv game.so.tmp game.so
 
 run: all
-	LD_LIBRARY_PATH=lib ./main
+	LSAN_OPTIONS=suppressions=./lsan.supp LD_LIBRARY_PATH=lib ./main
 
 clean:
 	rm -vf *.so *.o main
diff --git a/lsan.supp b/lsan.supp
new file mode 100644
index 0000000..fd27f4e
--- /dev/null
+++ b/lsan.supp
@@ -0,0 +1,3 @@
+# One-time GLFW/X11/GL driver init allocations reached via InitWindow.
+# Never freed by design; not owned by this codebase.
+leak:_glfwCreateWindowX11