diff --git a/utils/check-package b/utils/check-package
index 48ce956443..4c9eea0534 100755
--- a/utils/check-package
+++ b/utils/check-package
@@ -48,11 +48,13 @@ CONFIG_IN_FILENAME = re.compile("/Config\.\S*$")
 DO_CHECK_INTREE = re.compile("|".join([
     "arch/",
     "boot/",
+    "fs/",
     "package/",
     "system/",
     ]))
 DO_NOT_CHECK_INTREE = re.compile("|".join([
     "boot/barebox/barebox\.mk$",
+    "fs/common\.mk$",
     "package/doc-asciidoc\.mk$",
     "package/pkg-\S*\.mk$",
     ]))
diff --git a/utils/checkpackagelib/lib_mk.py b/utils/checkpackagelib/lib_mk.py
index cfd4d05117..58de4fd3cb 100644
--- a/utils/checkpackagelib/lib_mk.py
+++ b/utils/checkpackagelib/lib_mk.py
@@ -165,8 +165,11 @@ class TypoInPackageVariable(_CheckFunction):
         "LUA_RUN",
         "MKFS_JFFS2",
         "MKIMAGE_ARCH",
+        "PACKAGES_PERMISSIONS_TABLE",
         "PKG_CONFIG_HOST_BINARY",
+        "SUMTOOL",
         "TARGET_FINALIZE_HOOKS",
+        "TARGETS_ROOTFS",
         "XTENSA_CORE_NAME"]))
     PACKAGE_NAME = re.compile("/([^/]+)\.mk")
     VARIABLE = re.compile("^([A-Z0-9_]+_[A-Z0-9_]+)\s*(\+|)=")
@@ -177,7 +180,7 @@ class TypoInPackageVariable(_CheckFunction):
         # linux tools do not use LINUX_TOOL_ prefix for variables
         package = package.replace("LINUX_TOOL_", "")
         self.package = package
-        self.REGEX = re.compile("^(HOST_)?({}_[A-Z0-9_]+)".format(package))
+        self.REGEX = re.compile("^(HOST_|ROOTFS_)?({}_[A-Z0-9_]+)".format(package))
         self.FIND_VIRTUAL = re.compile(
             "^{}_PROVIDES\s*(\+|)=\s*(.*)".format(package))
         self.virtual = []