diff --git a/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css b/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css
index 63701e78fe0..8e96599f0d8 100644
--- a/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css
+++ b/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css
@@ -1,3 +1,3 @@
-@CHARSET 'utf-8';
+@charset "utf-8";
 @imPORT 'foo.css';
 @import 'bar.css';
diff --git a/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css.snap b/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css.snap
index 567c8f1c851..9b43fc1a81e 100644
--- a/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css.snap
+++ b/crates/biome_css_analyze/tests/specs/nursery/noInvalidPositionAtImportRule/validCharsetMultipleImport.css.snap
@@ -4,7 +4,7 @@ expression: validCharsetMultipleImport.css
 ---
 # Input
 ```css
-@CHARSET 'utf-8';
+@charset "utf-8";
 @imPORT 'foo.css';
 @import 'bar.css';