diff --git a/src/back/glsl/features.rs b/src/back/glsl/features.rs
index e76003f211..9699f98e19 100644
--- a/src/back/glsl/features.rs
+++ b/src/back/glsl/features.rs
@@ -280,7 +280,7 @@ impl<'a, W> Writer<'a, W> {
         }
     }
 
-    fn varying_required_features(&mut self,  binding: Option<&Binding>, ty: Handle<Type>) {
+    fn varying_required_features(&mut self, binding: Option<&Binding>, ty: Handle<Type>) {
         match self.module.types[ty].inner {
             crate::TypeInner::Struct { ref members, .. } => {
                 for member in members {
@@ -290,9 +290,11 @@ impl<'a, W> Writer<'a, W> {
             _ => {
                 if let Some(&Binding::Location(_, Some(interpolation))) = binding {
                     match interpolation {
-                        Interpolation::Linear => self.features.request(Features::NOPERSPECTIVE_QUALIFIER),
+                        Interpolation::Linear => {
+                            self.features.request(Features::NOPERSPECTIVE_QUALIFIER)
+                        }
                         Interpolation::Sample => self.features.request(Features::SAMPLE_QUALIFIER),
-                        _ => ()
+                        _ => (),
                     };
                 }
             }
diff --git a/src/valid/expression.rs b/src/valid/expression.rs
index 0ab075af11..9a1872d130 100644
--- a/src/valid/expression.rs
+++ b/src/valid/expression.rs
@@ -949,7 +949,7 @@ impl super::Validator {
                             _ => return Err(ExpressionError::InvalidArgumentType(fun, 0, arg)),
                         }
                     }
-                    Mf::Atan2 | Mf::Pow | Mf::Distance => {
+                    Mf::Atan2 | Mf::Pow | Mf::Distance | Mf::Step => {
                         let arg1_ty = match (arg1_ty, arg2_ty) {
                             (Some(ty1), None) => ty1,
                             _ => return Err(ExpressionError::WrongArgumentCount(fun)),
@@ -1006,7 +1006,7 @@ impl super::Validator {
                             ));
                         }
                     }
-                    Mf::Dot | Mf::Outer | Mf::Cross | Mf::Step | Mf::Reflect => {
+                    Mf::Dot | Mf::Outer | Mf::Cross | Mf::Reflect => {
                         let arg1_ty = match (arg1_ty, arg2_ty) {
                             (Some(ty1), None) => ty1,
                             _ => return Err(ExpressionError::WrongArgumentCount(fun)),
diff --git a/tests/snapshots.rs b/tests/snapshots.rs
index bc5b566143..80b7ecf212 100644
--- a/tests/snapshots.rs
+++ b/tests/snapshots.rs
@@ -35,7 +35,7 @@ struct Parameters {
     msl_custom: bool,
     #[cfg_attr(not(feature = "glsl-out"), allow(dead_code))]
     #[serde(default)]
-    glsl_desktop_version: Option<u16>
+    glsl_desktop_version: Option<u16>,
 }
 
 #[allow(dead_code, unused_variables)]
@@ -225,7 +225,10 @@ fn convert_wgsl() {
         ("image-copy", Targets::METAL),
         ("texture-array", Targets::SPIRV | Targets::METAL),
         ("operators", Targets::SPIRV | Targets::METAL | Targets::GLSL),
-        ("interpolate", Targets::SPIRV | Targets::METAL | Targets::GLSL),
+        (
+            "interpolate",
+            Targets::SPIRV | Targets::METAL | Targets::GLSL,
+        ),
     ];
 
     for &(name, targets) in inputs.iter() {