diff --git a/src/ipa/simple/algorithms/awb.cpp b/src/ipa/simple/algorithms/awb.cpp
index 3d76cc2f..195de41d 100644
--- a/src/ipa/simple/algorithms/awb.cpp
+++ b/src/ipa/simple/algorithms/awb.cpp
@@ -24,7 +24,7 @@ int Awb::configure(IPAContext &context,
 		   [[maybe_unused]] const IPAConfigInfo &configInfo)
 {
 	auto &gains = context.activeState.gains;
-	gains.red = gains.green = gains.blue = 256;
+	gains.red = gains.green = gains.blue = 1.0;
 
 	return 0;
 }
@@ -53,12 +53,11 @@ void Awb::process(IPAContext &context,
 	/*
 	 * Calculate red and blue gains for AWB.
 	 * Clamp max gain at 4.0, this also avoids 0 division.
-	 * Gain: 128 = 0.5, 256 = 1.0, 512 = 2.0, etc.
 	 */
 	auto &gains = context.activeState.gains;
-	gains.red = sumR <= sumG / 4 ? 1024 : 256 * sumG / sumR;
-	gains.blue = sumB <= sumG / 4 ? 1024 : 256 * sumG / sumB;
-	/* Green gain is fixed to 256 */
+	gains.red = sumR <= sumG / 4 ? 4.0 : static_cast<double>(sumG) / sumR;
+	gains.blue = sumB <= sumG / 4 ? 4.0 : static_cast<double>(sumG) / sumB;
+	/* Green gain is fixed to 1.0 */
 
 	LOG(IPASoftAwb, Debug) << "gain R/B " << gains.red << "/" << gains.blue;
 }
diff --git a/src/ipa/simple/algorithms/lut.cpp b/src/ipa/simple/algorithms/lut.cpp
index 44e13864..794d3644 100644
--- a/src/ipa/simple/algorithms/lut.cpp
+++ b/src/ipa/simple/algorithms/lut.cpp
@@ -59,15 +59,18 @@ void Lut::prepare(IPAContext &context,
 	auto &gammaTable = context.activeState.gamma.gammaTable;
 	const unsigned int gammaTableSize = gammaTable.size();
 	for (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) {
-		const unsigned int div = static_cast<double>(DebayerParams::kRGBLookupSize) *
-					 256 / gammaTableSize;
+		const double div = static_cast<double>(DebayerParams::kRGBLookupSize) /
+				   gammaTableSize;
 		/* Apply gamma after gain! */
 		unsigned int idx;
-		idx = std::min({ i * gains.red / div, gammaTableSize - 1 });
+		idx = std::min({ static_cast<unsigned int>(i * gains.red / div),
+				 gammaTableSize - 1 });
 		params->red[i] = gammaTable[idx];
-		idx = std::min({ i * gains.green / div, gammaTableSize - 1 });
+		idx = std::min({ static_cast<unsigned int>(i * gains.green / div),
+				 gammaTableSize - 1 });
 		params->green[i] = gammaTable[idx];
-		idx = std::min({ i * gains.blue / div, gammaTableSize - 1 });
+		idx = std::min({ static_cast<unsigned int>(i * gains.blue / div),
+				 gammaTableSize - 1 });
 		params->blue[i] = gammaTable[idx];
 	}
 }
diff --git a/src/ipa/simple/ipa_context.h b/src/ipa/simple/ipa_context.h
index 737bbbc3..cf1ef3fd 100644
--- a/src/ipa/simple/ipa_context.h
+++ b/src/ipa/simple/ipa_context.h
@@ -26,9 +26,9 @@ struct IPAActiveState {
 	} blc;
 
 	struct {
-		unsigned int red;
-		unsigned int green;
-		unsigned int blue;
+		double red;
+		double green;
+		double blue;
 	} gains;
 
 	static constexpr unsigned int kGammaLookupSize = 1024;