diff --git a/scripts/install b/scripts/install
index c0f3fb0..5d91f78 100644
--- a/scripts/install
+++ b/scripts/install
@@ -44,7 +44,7 @@ chown $app:$app "$install_dir/.env"
 
 # max file upload size
 MEDIA_UPLOAD_SIZE="${media_upload_size:0:2}000000" # convert the MB argument in bytes
-ynh_replace_string --match_string="UPLOAD_LIMIT=MEDIA_UPLOAD_SIZE" --replace_string="UPLOAD_LIMIT=$(MEDIA_UPLOAD_SIZE)" --target_file="$install_dir/.env"
+ynh_replace_string --match_string="UPLOAD_LIMIT=MEDIA_UPLOAD_SIZE" --replace_string="UPLOAD_LIMIT=$MEDIA_UPLOAD_SIZE" --target_file="$install_dir/.env"
 
 #=================================================
 # SPECIFIC SETUP