diff --git a/kani-driver/src/concrete_playback/test_generator.rs b/kani-driver/src/concrete_playback/test_generator.rs
index 4bf81471b760..4029893ecf34 100644
--- a/kani-driver/src/concrete_playback/test_generator.rs
+++ b/kani-driver/src/concrete_playback/test_generator.rs
@@ -257,19 +257,18 @@ fn gen_test_doc(harness: &HarnessMetadata, property: &Property) -> String {
         property.description
     ));
     if !harness.attributes.stubs.is_empty() {
-        doc_str.push_str("///\n");
-        doc_str.push_str(
-            "/// # Warning\n\
-               ///\n\
-               /// Concrete playback tests combined with stubs or contracts is highly \n\
-               /// experimental, and subject to change.\n\
-               ///\n\
-               /// The original harness has stubs which are not applied to this test.\n\
-               /// This may cause a mismatch of non-deterministic values if the stub\n\
-               /// creates any non-deterministic value.\n\
-               /// The execution path may also differ, which can be used to refine the stub\n\
-               /// logic.",
-        );
+doc_str.push_str(r#"/// 
+/// # Warning
+/// 
+/// Concrete playback tests combined with stubs or contracts is highly 
+/// experimental, and subject to change.
+/// 
+/// The original harness has stubs which are not applied to this test.
+/// This may cause a mismatch of non-deterministic values if the stub
+/// creates any non-deterministic value.
+/// The execution path may also differ, which can be used to refine the stub
+/// logic.
+"#);
     }
     doc_str
 }
diff --git a/tests/script-based-pre/playback_expected/playback.sh b/tests/script-based-pre/playback_expected/playback.sh
index 0a1a6997e59e..722c96239371 100755
--- a/tests/script-based-pre/playback_expected/playback.sh
+++ b/tests/script-based-pre/playback_expected/playback.sh
@@ -6,18 +6,18 @@
 set -o nounset
 
 run() {
-  input_rs=${1:?"Missing input file"}
+  local input_rs=${1:?"Missing input file"}
 
-  echo "[TEST] Generate test for $input_rs..."
-  kani ${input_rs} \
+  echo "[TEST] Generate test for ${input_rs}..."
+  kani "${input_rs}" \
     -Z concrete-playback --concrete-playback=inplace \
     -Z function-contracts -Z stubbing --output-format terse
 
   # Note that today one of the tests will succeed since the contract pre-conditions are not inserted by Kani.
   # Hopefully this will change with https://github.com/model-checking/kani/issues/3326
-  echo "[TEST] Run test for $input_rs..."
-  summary=$(kani playback -Z concrete-playback ${input_rs} -- kani_concrete_playback | grep "test result")
-  echo "Result for $input_rs: $summary"
+  echo "[TEST] Run test for ${input_rs}..."
+  summary=$(kani playback -Z concrete-playback "${input_rs}" -- kani_concrete_playback | grep "test result")
+  echo "Result for ${input_rs}: ${summary}"
 }
 
 ROOT_DIR=$(git rev-parse --show-toplevel)
@@ -25,15 +25,18 @@ MODIFIED_DIR=modified
 rm -rf $MODIFIED_DIR
 mkdir $MODIFIED_DIR
 
-for rs in src/*.rs
-do
-  [[ -e "${rs}" ]] || exit 1
-  echo "Running ${rs}"
-  cp "$rs" $MODIFIED_DIR
-  pushd $MODIFIED_DIR
-  run $(basename $rs)
-  popd
+for rs in src/*.rs; do
+  if [[ -e "${rs}" ]]; then
+    echo "Running ${rs}"
+    cp "${rs}" "${MODIFIED_DIR}"
+    pushd "${MODIFIED_DIR}" > /dev/null
+    run "$(basename "${rs}")"
+    popd > /dev/null
+  else
+    echo "No .rs files found in src directory"
+    exit 1
+  fi
 done
 
   # Cleanup
-rm -rf $MODIFIED_DIR
\ No newline at end of file
+rm -rf "${MODIFIED_DIR}"
\ No newline at end of file