diff --git a/ubooquity/Dockerfile b/ubooquity/Dockerfile
index 8419084eb..231dee377 100644
--- a/ubooquity/Dockerfile
+++ b/ubooquity/Dockerfile
@@ -26,7 +26,7 @@ RUN apk add --no-cache \
     && sed -i 's/{PGID:-911}/(bashio::config "PGID")/g' /etc/cont-init.d/10-adduser \
     # Allow maximum memory setting
     && sed -i 's/bash/bashio/g' /etc/services.d/ubooquity/run \
-    && sed -i 's/${MAXMEM:-512}/(bashio::config "maxmem")/g' /etc/services.d/ubooquity/run \
+    && sed -i 's/{MAXMEM:-512}/(bashio::config "maxmem")/g' /etc/services.d/ubooquity/run \
     #    # Set default folders
     && sed -i 's|/files|/share/ubooquity/files/|g' /defaults/preferences.json \
     && sed -i 's|/comics|/share/ubooquity/comics|g' /defaults/preferences.json \