diff --git a/cve_bin_tool/checkers/__init__.py b/cve_bin_tool/checkers/__init__.py
index 3b78d4e2a1..1ea7fbed3a 100644
--- a/cve_bin_tool/checkers/__init__.py
+++ b/cve_bin_tool/checkers/__init__.py
@@ -2,7 +2,8 @@
 import collections
 import re
 
-from ..util import regex_find
+from cve_bin_tool.error_handler import InvalidCheckerError
+from cve_bin_tool.util import regex_find
 
 __all__ = [
     "Checker",
@@ -96,6 +97,13 @@ def __new__(cls, name, bases, props):
         cls.VENDOR_PRODUCT = list(
             map(lambda vpkg: VendorProductPair(*vpkg), cls.VENDOR_PRODUCT)
         )
+        # Validate that vendor product pair is in lowercase
+        for items in cls.VENDOR_PRODUCT:
+            for vp in items:
+                if vp.islower() != True:
+                    raise InvalidCheckerError(
+                        f"Checker {name} has a VENDOR_PRODUCT string that is not lowercase"
+                    )
         # Compile regex
         cls.CONTAINS_PATTERNS = list(map(re.compile, cls.CONTAINS_PATTERNS))
         cls.VERSION_PATTERNS = list(map(re.compile, cls.VERSION_PATTERNS))
diff --git a/cve_bin_tool/error_handler.py b/cve_bin_tool/error_handler.py
index 8b53caa751..a7ecaf83d3 100644
--- a/cve_bin_tool/error_handler.py
+++ b/cve_bin_tool/error_handler.py
@@ -17,6 +17,10 @@ class InvalidCsvError(Exception):
     """ Given File is an Invalid CSV """
 
 
+class InvalidCheckerError(Exception):
+    """ Raised when data provided to Checker is not correct """
+
+
 class MissingFieldsError(Exception):
     """ Missing needed fields """
 
@@ -152,4 +156,5 @@ def __exit__(self, exc_type, exc_val, exc_tb):
     UnknownArchiveType: -13,
     UnknownConfigType: -14,
     CVEDataMissing: -15,
+    InvalidCheckerError: -16,
 }