diff --git a/src/ipa/simple/algorithms/blc.cpp b/src/ipa/simple/algorithms/blc.cpp
index 31eb356c..370385af 100644
--- a/src/ipa/simple/algorithms/blc.cpp
+++ b/src/ipa/simple/algorithms/blc.cpp
@@ -80,6 +80,11 @@ void BlackLevel::process(IPAContext &context,
 	constexpr float ignoredPercentage = 0.02;
 	const unsigned int total =
 		std::accumulate(begin(histogram), end(histogram), 0);
+	if (total == 0) {
+		LOG(IPASoftBL, Debug) << "Not guessing black level, histogram is empty";
+		return;
+	}
+
 	const unsigned int pixelThreshold = ignoredPercentage * total;
 	const unsigned int histogramRatio = 256 / SwIspStats::kYHistogramSize;
 	const unsigned int currentBlackIdx =