diff --git a/WebCore/platform/graphics/filters/FEComponentTransfer.cpp b/WebCore/platform/graphics/filters/FEComponentTransfer.cpp
index 1d9cfff..c088868 100644
--- a/WebCore/platform/graphics/filters/FEComponentTransfer.cpp
+++ b/WebCore/platform/graphics/filters/FEComponentTransfer.cpp
@@ -140,7 +140,7 @@ static void linear(unsigned char* values, const ComponentTransferFunction& trans
 static void gamma(unsigned char* values, const ComponentTransferFunction& transferFunction)
 {
     for (unsigned i = 0; i < 256; ++i) {
-        double val = 255.0 * (transferFunction.amplitude * pow((i / 255.0), transferFunction.exponent) + transferFunction.offset);
+        double val = 255.0 * (transferFunction.amplitude * pow(double(i / 255.0), double(transferFunction.exponent)) + transferFunction.offset);
         val = std::max(0.0, std::min(255.0, val));
         values[i] = static_cast<unsigned char>(val);
     }