diff --git a/crates/oxc_codegen/src/gen.rs b/crates/oxc_codegen/src/gen.rs
index 57bc3efb7cd75..d0ab1eb340c6b 100644
--- a/crates/oxc_codegen/src/gen.rs
+++ b/crates/oxc_codegen/src/gen.rs
@@ -534,7 +534,6 @@ impl Gen for SwitchStatement<'_> {
         p.print_soft_space();
         p.print_curly_braces(self.span, self.cases.is_empty(), |p| {
             for case in &self.cases {
-                p.add_source_mapping(case.span);
                 case.print(p, ctx);
             }
         });
@@ -547,9 +546,11 @@ impl Gen for SwitchCase<'_> {
     fn gen(&self, p: &mut Codegen, ctx: Context) {
         p.print_semicolon_if_needed();
         p.print_indent();
+        p.add_source_mapping(self.span);
         match &self.test {
             Some(test) => {
-                p.print_str("case ");
+                p.print_str("case");
+                p.print_soft_space();
                 p.print_expression(test);
             }
             None => p.print_str("default"),
diff --git a/tasks/minsize/minsize.snap b/tasks/minsize/minsize.snap
index 85b5bc50b1097..d1d640a2b34bd 100644
--- a/tasks/minsize/minsize.snap
+++ b/tasks/minsize/minsize.snap
@@ -3,23 +3,23 @@ Original   | minified   | minified   | gzip       | gzip       | Fixture
 -------------------------------------------------------------------------------------
 72.14 kB   | 24.04 kB   | 23.70 kB   | 8.61 kB    | 8.54 kB    | react.development.js
 
-173.90 kB  | 61.60 kB   | 59.82 kB   | 19.54 kB   | 19.33 kB   | moment.js 
+173.90 kB  | 61.55 kB   | 59.82 kB   | 19.54 kB   | 19.33 kB   | moment.js 
 
 287.63 kB  | 92.60 kB   | 90.07 kB   | 32.27 kB   | 31.95 kB   | jquery.js 
 
-342.15 kB  | 121.56 kB  | 118.14 kB  | 44.64 kB   | 44.37 kB   | vue.js    
+342.15 kB  | 121.55 kB  | 118.14 kB  | 44.64 kB   | 44.37 kB   | vue.js    
 
 544.10 kB  | 73.32 kB   | 72.48 kB   | 26.13 kB   | 26.20 kB   | lodash.js 
 
-555.77 kB  | 276.08 kB  | 270.13 kB  | 91.14 kB   | 90.80 kB   | d3.js     
+555.77 kB  | 276.06 kB  | 270.13 kB  | 91.14 kB   | 90.80 kB   | d3.js     
 
-1.01 MB    | 467.00 kB  | 458.89 kB  | 126.74 kB  | 126.71 kB  | bundle.min.js
+1.01 MB    | 466.83 kB  | 458.89 kB  | 126.74 kB  | 126.71 kB  | bundle.min.js
 
-1.25 MB    | 661.60 kB  | 646.76 kB  | 163.94 kB  | 163.73 kB  | three.js  
+1.25 MB    | 661.47 kB  | 646.76 kB  | 163.94 kB  | 163.73 kB  | three.js  
 
-2.14 MB    | 740.48 kB  | 724.14 kB  | 181.35 kB  | 181.07 kB  | victory.js
+2.14 MB    | 740.44 kB  | 724.14 kB  | 181.35 kB  | 181.07 kB  | victory.js
 
-3.20 MB    | 1.02 MB    | 1.01 MB    | 332.01 kB  | 331.56 kB  | echarts.js
+3.20 MB    | 1.02 MB    | 1.01 MB    | 332.00 kB  | 331.56 kB  | echarts.js
 
 6.69 MB    | 2.39 MB    | 2.31 MB    | 495.62 kB  | 488.28 kB  | antd.js