diff --git a/simplepbr/__init__.py b/simplepbr/__init__.py
index d553ef0..10cebe1 100644
--- a/simplepbr/__init__.py
+++ b/simplepbr/__init__.py
@@ -308,6 +308,7 @@ def _setup_tonemapping(self) -> None:
 
         fbprops = p3d.FrameBufferProperties()
         fbprops.float_color = True
+        fbprops.srgb_color = False
         fbprops.set_rgba_bits(16, 16, 16, 16)
         fbprops.set_depth_bits(24)
         fbprops.set_multisamples(self.msaa_samples)