diff --git a/src/ipa/libipa/histogram.h b/src/ipa/libipa/histogram.h
index 8cf8bb6d16..0c02dda2ba 100644
--- a/src/ipa/libipa/histogram.h
+++ b/src/ipa/libipa/histogram.h
@@ -37,7 +37,7 @@ public:
 
 	size_t bins() const { return cumulative_.size() - 1; }
 	Span<const uint64_t> data() const { return cumulative_; }
-	uint64_t total() const { return cumulative_[cumulative_.size() - 1]; }
+	uint64_t total() const { return cumulative_.back(); }
 	uint64_t cumulativeFrequency(double bin) const;
 	double quantile(double q, uint32_t first = 0, uint32_t last = UINT_MAX) const;
 	double interQuantileMean(double lowQuantile, double hiQuantile) const;