diff --git a/src/paths.js b/src/paths.js
index 5d3c03bf7..0cd9c7000 100644
--- a/src/paths.js
+++ b/src/paths.js
@@ -60,6 +60,8 @@ exports = module.exports = {
 
     GHOST_USER_FILE: path.join(baseDir(), 'platformdata/cloudron_ghost.json'),
 
+    SWAP_RATIO_FILE: path.join(baseDir(), 'platformdata/swap-ratio'),
+
     // this pattern is for the cloudron logs API route to work
     BACKUP_LOG_FILE: path.join(baseDir(), 'platformdata/logs/backup/app.log'),
     UPDATER_LOG_FILE: path.join(baseDir(), 'platformdata/logs/updater/app.log'),
diff --git a/src/system.js b/src/system.js
index d93e7cfde..47d8b840a 100644
--- a/src/system.js
+++ b/src/system.js
@@ -166,7 +166,12 @@ function getMemory(callback) {
 }
 
 function getMemoryAllocation(limit) {
-    const pc = os.totalmem() / (os.totalmem() + getSwapSize());
-    const ratio = Math.round(pc * 10) / 10; // a simple ratio
+    let ratio = parseFloat(safe.fs.readFileSync(paths.SWAP_RATIO_FILE, 'utf8'), 10);
+
+    if (!ratio) {
+        const pc = os.totalmem() / (os.totalmem() + getSwapSize());
+        ratio = Math.round(pc * 10) / 10; // a simple ratio
+    }
+
     return Math.round(Math.round(limit * ratio) / 1048576) * 1048576; // nearest MB
 }