diff --git a/sim/fakes/_sim.py b/sim/fakes/_sim.py
index ead1033d92e8ab4afd1514b3f1da170ecc8e83c9..2ff7d9c1d89df60400f92588dbb2d270ca118283 100644
--- a/sim/fakes/_sim.py
+++ b/sim/fakes/_sim.py
@@ -527,7 +527,7 @@ _sim = Simulation()
 class FramebufferManager:
     def __init__(self):
         self._free = []
-        for _ in range(2):
+        for _ in range(1):
             fb, c = ctx._wasm.ctx_new_for_framebuffer(240, 240)
             ctx._wasm.ctx_apply_transform(c, 1, 0, 120, 0, 1, 120, 0, 0, 1)
             self._free.append((fb, c))