diff --git a/flake.nix b/flake.nix
index aba88f5..0bcd933 100644
--- a/flake.nix
+++ b/flake.nix
@@ -100,10 +100,11 @@
                 wantedBy = [
                   "default.target"
                 ];
-                preStart = if !sync.skipFullSync then (''
+                preStart = ''
                   mkdir -p ${sync.target}
+                '' ++ (if !sync.skipFullSync then (''
                   photocatalog -source ${sync.source} -target ${sync.target} -mode ${sync.mode} ${if sync.overwrite then "-overwrite" else ""}
-                '') else null;
+                '') else null);
                 script = "photocatalog -source ${sync.source} -target ${sync.target} -skip-full-sync -watch -mode ${sync.mode} ${if sync.overwrite then "-overwrite" else ""}";
                 serviceConfig = {
                   Type="simple";