diff --git a/crates/multi_buffer/src/multi_buffer.rs b/crates/multi_buffer/src/multi_buffer.rs
index 9ceef63c182c2f5cbc70672024cc48ae1e49fcc6..365f8d1e1b7a988f7d573295cb9fcf49c753e619 100644
--- a/crates/multi_buffer/src/multi_buffer.rs
+++ b/crates/multi_buffer/src/multi_buffer.rs
@@ -418,6 +418,9 @@ impl MultiBuffer {
         S: ToOffset,
         T: Into<Arc<str>>,
     {
+        if self.read_only() {
+            return;
+        }
         if self.buffers.borrow().is_empty() {
             return;
         }