1 files changed, 4 insertions, 0 deletions

diff --git a/crates/ra_syntax/src/validation/byte_string.rs b/crates/ra_syntax/src/validation/byte_string.rs
index 2f98472f4..bf4c934a7 100644
--- a/crates/ra_syntax/src/validation/byte_string.rs
+++ b/crates/ra_syntax/src/validation/byte_string.rs
@@ -32,6 +32,10 @@ pub(crate) fn validate_byte_string_node(node: ast::ByteString, errors: &mut Vec<
     if !components.has_closing_quote {
         errors.push(SyntaxError::new(UnclosedString, literal_range));
     }
+
+    if let Some(range) = components.suffix {
+        errors.push(SyntaxError::new(InvalidSuffix, range));
+    }
 }
 
 #[cfg(test)]