diff --git a/config/functions b/config/functions
index 6bec74fc11..c449af22c0 100644
--- a/config/functions
+++ b/config/functions
@@ -186,6 +186,20 @@ fix_module_depends() {
   rm new.modinfo*
 }
 
+check_path() {
+dashes="==========================="
+  if [ "${PWD##/usr}" != "${PWD}" ]; then
+    check_pathmessage="$check_pathmessage\n $dashes$dashes$dashes"
+    check_pathmessage="$check_pathmessage\n ERROR: You try to build inside /usr"
+    check_pathmessage="$check_pathmessage\n $dashes$dashes$dashes"
+    check_pathmessage="$check_pathmessage\n This is not supported with our buildsystem."
+    check_pathmessage="$check_pathmessage\n Please use another dir (for example your \$HOME) to build $DISTRONAME"
+
+    echo -e $check_pathmessage
+    exit 1
+  fi
+}
+
 check_config() {
 dashes="==========================="
   if [ ! -d $PROJECT_DIR/$PROJECT ]; then
diff --git a/config/path b/config/path
index 37d1eb4fe7..52c5fe8eb3 100644
--- a/config/path
+++ b/config/path
@@ -123,6 +123,7 @@ fi
 VERSION_SUFFIX=$TARGET_ARCH
 . config/functions
 
+check_path
 check_config
 
 setup_toolchain target