diff --git a/lib/cretonne/meta/gen_instr.py b/lib/cretonne/meta/gen_instr.py
index ac8e338eda..28db9e81d2 100644
--- a/lib/cretonne/meta/gen_instr.py
+++ b/lib/cretonne/meta/gen_instr.py
@@ -211,7 +211,8 @@ def gen_instruction_data_impl(fmt):
                     if f.has_value_list:
                         fmt.line(n + ' { ref mut args, .. } => args,')
                 fmt.line('_ => panic!("No value list: {:?}", self),')
-            fmt.line('debug_assert!(args.is_empty(), "Value list already in use");')
+            fmt.line(
+                'debug_assert!(args.is_empty(), "Value list already in use");')
             fmt.line('*args = vlist;')
 
 
diff --git a/lib/cretonne/meta/gen_settings.py b/lib/cretonne/meta/gen_settings.py
index dfc2c2b70a..1560157915 100644
--- a/lib/cretonne/meta/gen_settings.py
+++ b/lib/cretonne/meta/gen_settings.py
@@ -245,7 +245,8 @@ def gen_constructor(sgrp, parent, fmt):
                 'pub fn new({}) -> Flags {{'.format(args), '}'):
             fmt.line('let bvec = builder.state_for("{}");'.format(sgrp.name))
             fmt.line('let mut bytes = [0; {}];'.format(sgrp.byte_size()))
-            fmt.line('debug_assert_eq!(bvec.len(), {});'.format(sgrp.settings_size))
+            fmt.line(
+                'debug_assert_eq!(bvec.len(), {});'.format(sgrp.settings_size))
             with fmt.indented(
                     'for (i, b) in bvec.iter().enumerate() {', '}'):
                 fmt.line('bytes[i] = *b;')