diff --git a/src/ipa/simple/algorithms/agc.cpp b/src/ipa/simple/algorithms/agc.cpp
index e9bcb2c032..93505f7665 100644
--- a/src/ipa/simple/algorithms/agc.cpp
+++ b/src/ipa/simple/algorithms/agc.cpp
@@ -67,7 +67,7 @@ Agc::Agc()
 
 void Agc::updateExposure(IPAContext &context, IPAFrameContext &frameContext, double exposureMSV)
 {
-	int32_t exposure = frameContext.sensor.exposure;
+	uint32_t exposure = frameContext.sensor.exposure;
 	double again = frameContext.sensor.gain;
 
 	double error = kExposureOptimal - exposureMSV;
@@ -87,7 +87,7 @@ void Agc::updateExposure(IPAContext &context, IPAFrameContext &frameContext, dou
 	if (factor > 1.0f) {
 		/* Scene too dark: increase exposure first, then gain. */
 		if (exposure < context.configuration.agc.exposureMax) {
-			int32_t next = static_cast<int32_t>(exposure * factor);
+			uint32_t next = exposure * factor;
 			exposure = std::max(next, exposure + 1);
 		} else {
 			double next = again * factor;
@@ -105,7 +105,7 @@ void Agc::updateExposure(IPAContext &context, IPAFrameContext &frameContext, dou
 			else
 				again = next;
 		} else {
-			int32_t next = static_cast<int32_t>(exposure * factor);
+			uint32_t next = exposure * factor;
 			exposure = std::min(next, exposure - 1);
 		}
 	}
diff --git a/src/ipa/simple/ipa_context.h b/src/ipa/simple/ipa_context.h
index d35fb1e91d..980dc93cc4 100644
--- a/src/ipa/simple/ipa_context.h
+++ b/src/ipa/simple/ipa_context.h
@@ -26,7 +26,7 @@ namespace ipa::soft {
 
 struct IPASessionConfiguration {
 	struct {
-		int32_t exposureMin, exposureMax;
+		uint32_t exposureMin, exposureMax;
 		double againMin, againMax, again10, againMinStep;
 		utils::Duration lineDuration;
 	} agc;
@@ -37,14 +37,14 @@ struct IPASessionConfiguration {
 
 struct IPAActiveState {
 	struct {
-		int32_t exposure;
+		uint32_t exposure;
 		double again;
 		bool valid;
 	} agc;
 
 	struct {
 		uint8_t level;
-		int32_t lastExposure;
+		uint32_t lastExposure;
 		double lastGain;
 	} blc;
 
@@ -67,12 +67,12 @@ struct IPAFrameContext : public FrameContext {
 	Matrix<float, 3, 3> ccm;
 
 	struct {
-		int32_t exposure;
+		uint32_t exposure;
 		double gain;
 	} agc;
 
 	struct {
-		int32_t exposure;
+		uint32_t exposure;
 		double gain;
 	} sensor;