diff --git a/crates/oxc_linter/src/rules/typescript/no_namespace.rs b/crates/oxc_linter/src/rules/typescript/no_namespace.rs
index ed762ae38b..3c5c1a7268 100644
--- a/crates/oxc_linter/src/rules/typescript/no_namespace.rs
+++ b/crates/oxc_linter/src/rules/typescript/no_namespace.rs
@@ -142,7 +142,8 @@ impl Rule for NoNamespace {
 
         let keyword = declaration.kind.as_str();
         let mut span_start = declaration.span.start;
-        span_start += ctx.find_next_token_from(span_start, keyword).unwrap();
+        span_start +=
+            ctx.find_next_token_within(span_start, declaration.span.end, keyword).unwrap();
         #[expect(clippy::cast_possible_truncation)]
         let span = Span::sized(span_start, keyword.len() as u32);
         ctx.diagnostic(no_namespace_diagnostic(span));