diff --git a/src/mol-gl/shader/chunks/common.glsl.ts b/src/mol-gl/shader/chunks/common.glsl.ts
index 20dc1440709d2547f8ccd522635aba51b4b3963b..14fc3691141b8f5bfb981f89c389352e43077f0f 100644
--- a/src/mol-gl/shader/chunks/common.glsl.ts
+++ b/src/mol-gl/shader/chunks/common.glsl.ts
@@ -11,7 +11,7 @@ float intMod(const in float a, const in float b) { return a - b * float(int(a) /
 float pow2(const in float x) { return x*x; }
 
 const float maxFloat = 10000.0; // NOTE constant also set in TypeScript
-const float floatLogFactor = log(maxFloat + 1.0);
+const float floatLogFactor = 4.0000434273; // log(maxFloat + 1.0);
 float encodeFloatLog(const in float value) { return log(value + 1.0) / floatLogFactor; }
 float decodeFloatLog(const in float value) { return exp(value * floatLogFactor) - 1.0; }