diff --git a/CHANGELOG.md b/CHANGELOG.md
index 51ebab2..3b111bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com), and 
 
 ## [Unreleased]
 
+### Fixed
+
+- The `maxDensity` field in metadata files when `-max-density 1` is specified now gets the correct value instead of the erroneous `null`.
+
 ## [3.0.0] — 2024–12–15
 
 ### Changed
diff --git a/lib/processRaster.js b/lib/processRaster.js
index 77c542c..22c0f13 100644
--- a/lib/processRaster.js
+++ b/lib/processRaster.js
@@ -108,7 +108,7 @@ export async function processRaster (options) {
 		let isMetaFileExists = await fileExists(metaJsonPath)
 		let metaData = isMetaFileExists ? await readJsonFile(metaJsonPath) : {}
 
-		metaData.maxDensity = Math.max(metaData.maxDensity, originDensity)
+		metaData.maxDensity = metaData.maxDensity ? Math.max(metaData.maxDensity, originDensity) : originDensity
 		metaData.formats = Array.from(new Set([...metaData.formats || [], ...formats]))
 		metaData.sizes = Array.from(new Set([...metaData.sizes || [], ...sizes].sort((a, b) => {
 			if (!a.breakpoint) return 1