diff --git a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
index ca0306b24a121f5ec7faa7a9d187a75e61444c43..8b9c8aff92193c96b7f04a34334fe8fdee949c48 100644
--- a/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
+++ b/indra/newview/app_settings/shaders/class3/deferred/softenLightF.glsl
@@ -332,6 +332,7 @@ void main()
     #endif
     #if DEBUG_PBR_ROUGH_PERCEPTUAL
         color.rgb = vec3(perceptualRough);
+        color.rgb = linear_to_srgb(color.rgb);
     #endif
     #if DEBUG_PBR_ROUGH_ALPHA
         color.rgb = vec3(alphaRough);