diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index bfaa856536..344bb532b2 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -4340,9 +4340,9 @@ pref("webgl.dxgl.needs-finish", false);
 
 // Disable ANGLE's validation layer?
 #ifdef XP_WIN
-pref("webgl.gl_khr_no_validation", true);
-#else
 pref("webgl.gl_khr_no_validation", false);
+#else
+pref("webgl.gl_khr_no_validation", true);
 #endif
 
 pref("gfx.offscreencanvas.enabled", false);