diff --git a/utils/checkpackagelib/lib_mk.py b/utils/checkpackagelib/lib_mk.py
index 9e9a045776..dd04ffd58f 100644
--- a/utils/checkpackagelib/lib_mk.py
+++ b/utils/checkpackagelib/lib_mk.py
@@ -4,6 +4,7 @@
 # menu options using "make menuconfig" and by running "make" with appropriate
 # packages enabled.
 
+import os
 import re
 
 from checkpackagelib.base import _CheckFunction
@@ -165,10 +166,9 @@ class PackageHeader(_CheckFunction):
 
 class RemoveDefaultPackageSourceVariable(_CheckFunction):
     packages_that_may_contain_default_source = ["binutils", "gcc", "gdb"]
-    PACKAGE_NAME = re.compile("/([^/]+)\.mk")
 
     def before(self):
-        package = self.PACKAGE_NAME.search(self.filename).group(1)
+        package, _ = os.path.splitext(os.path.basename(self.filename))
         package_upper = package.replace("-", "_").upper()
         self.package = package
         self.FIND_SOURCE = re.compile(
@@ -238,11 +238,10 @@ class TypoInPackageVariable(_CheckFunction):
         "TARGET_FINALIZE_HOOKS",
         "TARGETS_ROOTFS",
         "XTENSA_CORE_NAME"]))
-    PACKAGE_NAME = re.compile("/([^/]+)\.mk")
     VARIABLE = re.compile("^([A-Z0-9_]+_[A-Z0-9_]+)\s*(\+|)=")
 
     def before(self):
-        package = self.PACKAGE_NAME.search(self.filename).group(1)
+        package, _ = os.path.splitext(os.path.basename(self.filename))
         package = package.replace("-", "_").upper()
         # linux tools do not use LINUX_TOOL_ prefix for variables
         package = package.replace("LINUX_TOOL_", "")
diff --git a/utils/checkpackagelib/lib_patch.py b/utils/checkpackagelib/lib_patch.py
index 453b782e6c..438353ad3b 100644
--- a/utils/checkpackagelib/lib_patch.py
+++ b/utils/checkpackagelib/lib_patch.py
@@ -3,6 +3,7 @@
 # functions don't need to check for things already checked by running
 # "make package-dirclean package-patch".
 
+import os
 import re
 
 from checkpackagelib.base import _CheckFunction
@@ -10,10 +11,10 @@ from checkpackagelib.lib import NewlineAtEof           # noqa: F401
 
 
 class ApplyOrder(_CheckFunction):
-    APPLY_ORDER = re.compile("/\d{1,4}-[^/]*$")
+    APPLY_ORDER = re.compile("\d{1,4}-[^/]*$")
 
     def before(self):
-        if not self.APPLY_ORDER.search(self.filename):
+        if not self.APPLY_ORDER.match(os.path.basename(self.filename)):
             return ["{}:0: use name <number>-<description>.patch "
                     "({}#_providing_patches)"
                     .format(self.filename, self.url_to_manual)]