diff --git a/libraries/entropy/qa.py b/libraries/entropy/qa.py
index 302f014de..0d6d3f9a2 100644
--- a/libraries/entropy/qa.py
+++ b/libraries/entropy/qa.py
@@ -991,6 +991,18 @@ class QAInterface:
 
         return valid
 
+    def __check_package_using_spm(self, package_path):
+
+        from entropy.spm.plugins.factory import get_default_class
+        spm_class = get_default_class()
+        spm_rc, spm_msg = spm_class.execute_qa_tests(package_path)
+
+        if spm_rc == 0:
+            return True
+        sys.stderr.write("QA Error: " + spm_msg)
+        sys.stderr.flush()
+        return False
+
     def entropy_package_checks(self, package_path):
         """
         Main method for the execution of QA tests on physical Entropy
@@ -1001,7 +1013,8 @@ class QAInterface:
         @return: True, if all checks passed
         @rtype: bool
         """
-        qa_methods = [self.__analyze_package_edb]
+        qa_methods = [self.__analyze_package_edb,
+            self.__check_package_using_spm]
         for method in qa_methods:
             qa_rc = method(package_path)
             if not qa_rc:
diff --git a/libraries/entropy/spm/plugins/interfaces/portage_plugin.py b/libraries/entropy/spm/plugins/interfaces/portage_plugin.py
index e5e1eff8b..4a3bc3ce0 100644
--- a/libraries/entropy/spm/plugins/interfaces/portage_plugin.py
+++ b/libraries/entropy/spm/plugins/interfaces/portage_plugin.py
@@ -2028,6 +2028,63 @@ class PortagePlugin(SpmPlugin):
 
         return 0
 
+    @staticmethod
+    def execute_qa_tests(package_path):
+        """
+        Reimplemented from SpmPlugin class.
+        """
+        tests = [PortagePlugin._test_environment_bz2]
+        msg = None
+        exec_rc = 0
+        for test in tests:
+            exec_rc, msg = test(package_path)
+            if exec_rc != 0:
+                break
+        return exec_rc, msg
+
+    @staticmethod
+    def _test_environment_bz2(package_path):
+
+        tmp_path = tempfile.mkdtemp()
+        entropy.tools.extract_xpak(package_path, tmpdir = tmp_path)
+        if not os.listdir(tmp_path):
+            shutil.rmtree(tmp_path)
+            return 1, "unable to extract xpak metadata"
+
+        # make sure we have the environment.bz2 file to check
+        env_file = os.path.join(tmp_path, PortagePlugin.ENV_FILE_COMP)
+        if not (os.path.isfile(env_file) and os.access(env_file, os.R_OK)):
+            shutil.rmtree(tmp_path)
+            return 2, "unable to locate %s file" % (
+                PortagePlugin.ENV_FILE_COMP,)
+
+        # read env file
+        bz_f = bz2.BZ2File(env_file, "r")
+        valid_lc_all = True
+        msg = None
+        lc_all_str = const_convert_to_rawstring("LC_ALL")
+        lc_all_c = const_convert_to_rawstring("LC_ALL=C")
+        lc_all_enus = const_convert_to_rawstring("LC_ALL=en_US")
+        try:
+
+            for line in bz_f.readlines():
+                if line.startswith(lc_all_str):
+                    if line.startswith(lc_all_c) or \
+                        line.startswith(lc_all_enus):
+                        continue
+                    valid_lc_all = False
+                    msg = "LC_ALL set to => %s" % (line.strip(),)
+                    break
+
+        finally:
+            bz_f.close()
+
+        env_rc = 0
+        if not valid_lc_all:
+            env_rc = 1
+        shutil.rmtree(tmp_path)
+        return env_rc, msg
+
     @staticmethod
     def entropy_install_setup_hook(entropy_client, package_metadata):
         """
diff --git a/libraries/entropy/spm/plugins/skel.py b/libraries/entropy/spm/plugins/skel.py
index 4af445ede..6b14b6708 100644
--- a/libraries/entropy/spm/plugins/skel.py
+++ b/libraries/entropy/spm/plugins/skel.py
@@ -524,6 +524,12 @@ class SpmPlugin(Singleton):
         files. This method can be used to test Entropy produced packages
         to make sure that they are fine on this side too. It is called
         by Entropy QA module (entropy.qa).
+
+        @param package_path: path to Entropy package
+        @type package_path: string
+        @return: tuple composed by error status and error message (if any).
+            Error status is an int with != 0 values if error occured.
+        @rtype: tuple
         """
         raise NotImplementedError()