diff --git a/tools/check_conventions.py b/tools/check_conventions.py
index 6bcace1eab62..3868b2efaddd 100644
--- a/tools/check_conventions.py
+++ b/tools/check_conventions.py
@@ -59,7 +59,7 @@
 NID_SOURCES = r"APS5_EXPORT|APS5_VABI|_nid_postfix|ASM_FUNCTION"
 STUB_BODY = re.compile(r"^(?:\(void\)\s*\w+\s*;|static_cast<void>\(\s*\w+\s*\)\s*;)*"
                        r"(?:return\s*\(?\s*(?:-?(?:0x[0-9a-fA-F]+|\d+)[uUlL]*|nullptr|true|false|\w*_OK)?\s*\)?\s*;)?$")
-SYSTEM_DEPENDENCY = re.compile(r"\b(find_package\s*\((?!\s*(Python3|Threads|Git)\b)|pkg_check_modules\b|pkg_search_module\b|find_(library|path|program|file)\b)", re.I)
+SYSTEM_DEPENDENCY = re.compile(r"\b(find_package\s*\((?!\s*(Python3|Threads|Git|LLVM)\b)|pkg_check_modules\b|pkg_search_module\b|find_(library|path|program|file)\b)", re.I)
 TITLE = re.compile(r"\b(PPSA|CUSA)\d{5}\b")
 EXTENSION = re.compile(r"__attribute__|__declspec|#\s*pragma\s+(?!once\b)")
 INTEGER = r"(0[xX][0-9a-fA-F']+|0[bB][01']+|[0-9][0-9']*)[uUlLzZ]*"
diff --git a/tools/tests/test_check_conventions_comments.py b/tools/tests/test_check_conventions_comments.py
index fc6460ae3c70..8049eacc4ef2 100644
--- a/tools/tests/test_check_conventions_comments.py
+++ b/tools/tests/test_check_conventions_comments.py
@@ -624,7 +624,7 @@ def test_flags_system_lookups(self):
                 self.assertIsNotNone(SYSTEM_DEPENDENCY.search(line))
 
     def test_allows_exempt_lines(self):
-        for line in ("find_package(Python3 COMPONENTS Interpreter)", "find_package( Threads REQUIRED )", "FIND_PACKAGE(Git)", "add_library(x)"):
+        for line in ("find_package(Python3 COMPONENTS Interpreter)", "find_package( Threads REQUIRED )", "FIND_PACKAGE(Git)", "find_package(LLVM REQUIRED CONFIG)", "add_library(x)"):
             with self.subTest(line=line):
                 self.assertIsNone(SYSTEM_DEPENDENCY.search(line))