diff --git a/src/renderer/sw_engine/tvgSwCommon.h b/src/renderer/sw_engine/tvgSwCommon.h
index 3f458d64..6ef53448 100644
--- a/src/renderer/sw_engine/tvgSwCommon.h
+++ b/src/renderer/sw_engine/tvgSwCommon.h
@@ -558,12 +558,12 @@ static inline uint32_t opBlendSoftLight(uint32_t s, uint32_t d, TVG_UNUSED uint8
     if (d == 0) return s;
 
     RenderColor o;
-    if (!UNPREMULTIPLY(d, o)) o.r = o.g = o.b = 0;
+    if (!UNPREMULTIPLY(d, o)) return 0;
 
-    //(255 - 2 * s) * (d * d) + (2 * s * b)
-    auto c1 = MULTIPLY(255 - std::min(255, 2 * C1(s)), MULTIPLY(o.r, o.r)) + MULTIPLY(std::min(255, 2 * C1(s)), o.r);
-    auto c2 = MULTIPLY(255 - std::min(255, 2 * C2(s)), MULTIPLY(o.g, o.g)) + MULTIPLY(std::min(255, 2 * C2(s)), o.g);
-    auto c3 = MULTIPLY(255 - std::min(255, 2 * C3(s)), MULTIPLY(o.b, o.b)) + MULTIPLY(std::min(255, 2 * C3(s)), o.b);
+    //(255 - 2 * s) * (d * d) + (2 * s * d)
+    auto c1 = MULTIPLY(255 - std::min(255, 2 * C1(s)), MULTIPLY(o.r, o.r)) + std::min(255, 2 * MULTIPLY(C1(s), o.r));
+    auto c2 = MULTIPLY(255 - std::min(255, 2 * C2(s)), MULTIPLY(o.g, o.g)) + std::min(255, 2 * MULTIPLY(C2(s), o.g));
+    auto c3 = MULTIPLY(255 - std::min(255, 2 * C3(s)), MULTIPLY(o.b, o.b)) + std::min(255, 2 * MULTIPLY(C3(s), o.b));
     return JOIN(255, c1, c2, c3);
 }