diff --git a/lib/rivet/src/prefs/mod.ri b/lib/rivet/src/prefs/mod.ri
index 9dfb95ca1..954f1ab95 100644
--- a/lib/rivet/src/prefs/mod.ri
+++ b/lib/rivet/src/prefs/mod.ri
@@ -33,8 +33,8 @@ public enum OutputMode as uint8 {
 }
 
 public enum OptimizeMode as uint8 {
-	Debug,
-	Release
+    Debug,
+    Release
 }
 
 public enum LinkMode as uint8 {
@@ -59,25 +59,26 @@ public struct Prefs {
     public mut mod_dir: string;
     public mut mod_output: string;
 
-    // Output info
-    public mut output_mode: OutputMode;
-    public mut optimize_mode: OptimizeMode;
-    public mut is_test: bool;
-    public mut run_output: bool;
-    public mut run_output_args: []string;
-
     public mut library_path: []string := [rivetcLibDir, libDir];
     public mut libraries_to_link: []string;
     public mut objects_to_link: []string;
 
     public mut flags: []string;
-	public mut check: bool;
+    public mut check: bool;
     public mut check_syntax: bool;
-	public mut emit_mir: bool;
-	public mut keep_c: bool;
-	public mut all_warns_are_errors: bool;
-	public mut hide_all_warns: bool;
-	public mut is_verbose: bool;
+    public mut emit_mir: bool;
+    public mut keep_c: bool;
+    public mut all_warns_are_errors: bool;
+    public mut hide_all_warns: bool;
+    public mut is_verbose: bool;
+    public mut is_fmt: bool; 
+
+    // Output info
+    public mut output_mode: OutputMode;
+    public mut optimize_mode: OptimizeMode;
+    public mut is_test: bool;
+    public mut run_output: bool;
+    public mut run_output_args: []string;
 
     public func new(args: []string, is_test: bool, run_output: bool, is_check: bool) -> !Self {
         prefs := Prefs(is_test: is_test, run_output: run_output, check: is_check);