diff --git a/src/ipa/simple/algorithms/adjust.cpp b/src/ipa/simple/algorithms/adjust.cpp
index 600fd3c7b..57ed4f6bf 100644
--- a/src/ipa/simple/algorithms/adjust.cpp
+++ b/src/ipa/simple/algorithms/adjust.cpp
@@ -33,9 +33,9 @@ int Adjust::init(IPAContext &context, [[maybe_unused]] const YamlObject &tuningD
 int Adjust::configure(IPAContext &context,
 		      [[maybe_unused]] const IPAConfigInfo &configInfo)
 {
-	context.activeState.knobs.gamma = std::optional<double>();
-	context.activeState.knobs.contrast = std::optional<double>();
-	context.activeState.knobs.saturation = std::optional<double>();
+	context.activeState.knobs.gamma = std::optional<float>();
+	context.activeState.knobs.contrast = std::optional<float>();
+	context.activeState.knobs.saturation = std::optional<float>();
 
 	return 0;
 }
diff --git a/src/ipa/simple/ipa_context.h b/src/ipa/simple/ipa_context.h
index 8f56c25bf..fb063b091 100644
--- a/src/ipa/simple/ipa_context.h
+++ b/src/ipa/simple/ipa_context.h
@@ -58,7 +58,7 @@ struct IPAActiveState {
 		std::array<double, kGammaLookupSize> gammaTable;
 		uint8_t blackLevel;
 		float gamma;
-		double contrast;
+		float contrast;
 	} gamma;
 
 	Matrix<float, 3, 3> ccm;
@@ -68,7 +68,7 @@ struct IPAActiveState {
 	struct {
 		std::optional<float> gamma;
 		/* 0..2 range, 1.0 = normal */
-		std::optional<double> contrast;
+		std::optional<float> contrast;
 		std::optional<float> saturation;
 	} knobs;
 };
@@ -87,7 +87,7 @@ struct IPAFrameContext : public FrameContext {
 	} gains;
 
 	std::optional<float> gamma;
-	std::optional<double> contrast;
+	std::optional<float> contrast;
 	std::optional<float> saturation;
 };