diff --git a/Cargo.lock b/Cargo.lock
index c5b0bd3c77e9895d699e77c92d813d578930cbd0..4c9bf2c525cd50e00f700d1fa6eb979496f1c1d4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7878,6 +7878,7 @@ version = "0.1.0"
 dependencies = [
  "collections",
  "convert_case 0.7.1",
+ "log",
  "pretty_assertions",
  "streaming-iterator",
  "tree-sitter",
diff --git a/crates/migrator/Cargo.toml b/crates/migrator/Cargo.toml
index 11126016a6a1d41830a6ad046d2ff446b9d5c172..865f4278fe5b94def083f25c09b1b32cd5fa6f03 100644
--- a/crates/migrator/Cargo.toml
+++ b/crates/migrator/Cargo.toml
@@ -15,6 +15,7 @@ doctest = false
 [dependencies]
 collections.workspace = true
 convert_case.workspace = true
+log.workspace = true
 streaming-iterator.workspace = true
 tree-sitter-json.workspace = true
 tree-sitter.workspace = true
diff --git a/crates/migrator/src/migrator.rs b/crates/migrator/src/migrator.rs
index e50b7020173512d7f5f7eb338ecece77ad632f4e..72016ecdfeead3ce63da034b75108fbde1107c3c 100644
--- a/crates/migrator/src/migrator.rs
+++ b/crates/migrator/src/migrator.rs
@@ -29,11 +29,19 @@ fn migrate(text: &str, patterns: MigrationPatterns, query: &Query) -> Option<Str
     if edits.is_empty() {
         None
     } else {
-        let mut text = text.to_string();
-        for (range, replacement) in edits.into_iter().rev() {
-            text.replace_range(range, &replacement);
+        let mut new_text = text.to_string();
+        for (range, replacement) in edits.iter().rev() {
+            new_text.replace_range(range.clone(), replacement);
+        }
+        if new_text == text {
+            log::error!(
+                "Edits computed for configuration migration do not cause a change: {:?}",
+                edits
+            );
+            None
+        } else {
+            Some(new_text)
         }
-        Some(text)
     }
 }