diff --git a/commands.md b/commands.md
index c225199..3d9040a 100644
--- a/commands.md
+++ b/commands.md
@@ -73,7 +73,7 @@ $ solana-test-suite debug-mismatches [OPTIONS]
 * `-t, --target PATH`: Shared object (.so) target file paths (pairs with --keep-passing). Targets must have required function entrypoints defined  [default: impl/lib/libsolfuzz_firedancer.so]
 * `-o, --output-dir PATH`: Output directory for messages  [default: debug_mismatch]
 * `-u, --repro-urls TEXT`: Comma-delimited list of FuzzCorp mismatch links
-* `-s, --section-names TEXT`: Comma-delimited list of FuzzCorp section names
+* `-n, --section-names TEXT`: Comma-delimited list of FuzzCorp section names
 * `-f, --fuzzcorp-url TEXT`: Comma-delimited list of FuzzCorp section names  [default: https://api.dev.fuzzcorp.asymmetric.re/uglyweb/firedancer-io/solfuzz/bugs/]
 * `-l, --log-level INTEGER`: FD logging level  [default: 5]
 * `-r, --randomize-output-buffer`: Randomizes bytes in output buffer before shared library execution
diff --git a/src/test_suite/test_suite.py b/src/test_suite/test_suite.py
index eaea577..42c3f9f 100644
--- a/src/test_suite/test_suite.py
+++ b/src/test_suite/test_suite.py
@@ -586,7 +586,7 @@ def debug_mismatches(
     section_names: str = typer.Option(
         "",
         "--section-names",
-        "-s",
+        "-n",
         help="Comma-delimited list of FuzzCorp section names",
     ),
     fuzzcorp_url: str = typer.Option(
@@ -694,6 +694,8 @@ def debug_mismatches(
         ].strip()
         custom_data_urls.append(custom_url)
 
+    ld_preload = os.environ.pop("LD_PRELOAD", None)
+
     num_test_cases = len(custom_data_urls)
     print("Downloading tests...")
     results = []
@@ -708,6 +710,9 @@ def debug_mismatches(
         ):
             results.append(result)
 
+    if ld_preload is not None:
+        os.environ["LD_PRELOAD"] = ld_preload
+
     repro_custom = globals.output_dir / "repro_custom"
     if repro_custom.exists():
         shutil.rmtree(repro_custom)