diff --git a/tools/check_elf_file.py b/tools/check_elf_file.py
index 1ff8e65..045cb1d 100755
--- a/tools/check_elf_file.py
+++ b/tools/check_elf_file.py
@@ -195,10 +195,12 @@
   @classmethod
   def _read_llvm_readobj(cls, elf_file_path, header, llvm_readobj):
     """Run llvm-readobj and parse the output."""
-    proc = subprocess.Popen(
-      [llvm_readobj, '-dynamic-table', '-dyn-symbols', elf_file_path],
-      stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    cmd = [llvm_readobj, '--dynamic-table', '--dyn-symbols', elf_file_path]
+    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     out, _ = proc.communicate()
+    rc = proc.returncode
+    if rc != 0:
+      raise subprocess.CalledProcessError(rc, cmd, out)
     lines = out.splitlines()
     return cls._parse_llvm_readobj(elf_file_path, header, lines)