diff --git a/avocado/core/tree.py b/avocado/core/tree.py
index b9897f15d2c9d40c38572db7db3d264fb31d714f..da8dd1e571c386693c6795c1fb848ea11f07b56b 100644
--- a/avocado/core/tree.py
+++ b/avocado/core/tree.py
@@ -37,13 +37,18 @@ import collections
 import os
 import re
 
-import yaml
-
-
 try:
-    from yaml import CLoader as Loader
+    import yaml
 except ImportError:
-    from yaml import Loader
+    MULTIPLEX_CAPABLE = False
+else:
+    MULTIPLEX_CAPABLE = True
+
+if MULTIPLEX_CAPABLE:
+    try:
+        from yaml import CLoader as Loader
+    except ImportError:
+        from yaml import Loader
 
 
 # Mapping for yaml flags
diff --git a/avocado/job.py b/avocado/job.py
index 5fbcf18c8c7451d44b13198f3cf1f22159f0fc06..e41c9d3cf09b6ebbdfb1bfa1065a4396b76671b3 100644
--- a/avocado/job.py
+++ b/avocado/job.py
@@ -40,14 +40,9 @@ from avocado.plugins import jsonresult
 from avocado.plugins import xunit
 from avocado.utils import archive
 from avocado.utils import path
+from avocado.plugins import htmlresult
 
-
-try:
-    from avocado.plugins import htmlresult
-    HTML_REPORT_SUPPORT = True
-except ImportError:
-    HTML_REPORT_SUPPORT = False
-
+HTML_REPORT_SUPPORT = htmlresult.HTML_REPORT_CAPABLE
 _NEW_ISSUE_LINK = 'https://github.com/avocado-framework/avocado/issues/new'
 
 
@@ -87,7 +82,8 @@ class Job(object):
                 self.loglevel = mapping[raw_log_level]
             else:
                 self.loglevel = logging.DEBUG
-            self.multiplex_files = args.multiplex_files
+            if multiplexer.MULTIPLEX_CAPABLE:
+                self.multiplex_files = args.multiplex_files
             self.show_job_log = args.show_job_log
             self.silent = args.silent
         else:
@@ -273,13 +269,14 @@ class Job(object):
 
         params_list = self.test_loader.discover_urls(urls)
 
-        if multiplex_files is None:
-            if self.args and self.args.multiplex_files is not None:
-                multiplex_files = self.args.multiplex_files
+        if multiplexer.MULTIPLEX_CAPABLE:
+            if multiplex_files is None:
+                if self.args and self.args.multiplex_files is not None:
+                    multiplex_files = self.args.multiplex_files
 
-        if multiplex_files is not None:
-            params_list = self._multiplex_params_list(params_list,
-                                                      multiplex_files)
+            if multiplex_files is not None:
+                params_list = self._multiplex_params_list(params_list,
+                                                          multiplex_files)
 
         self._setup_job_results()
 
diff --git a/avocado/multiplexer.py b/avocado/multiplexer.py
index 49329a483b7fb516d8d1b13e6e330d2de1b6424c..7173b1444c9e7060ace3fe30a23692fb004b2264 100644
--- a/avocado/multiplexer.py
+++ b/avocado/multiplexer.py
@@ -23,6 +23,8 @@ import itertools
 
 from avocado.core import tree
 
+MULTIPLEX_CAPABLE = tree.MULTIPLEX_CAPABLE
+
 
 def tree2pools(node, mux=True):
     """
diff --git a/avocado/plugins/htmlresult.py b/avocado/plugins/htmlresult.py
index 022c98b4a9202f1197570658302788f3b31562fe..b270b45f7000658f5899ce545d2bccc03d9f3816 100644
--- a/avocado/plugins/htmlresult.py
+++ b/avocado/plugins/htmlresult.py
@@ -21,7 +21,12 @@ import sys
 import time
 import webbrowser
 
-import pystache
+try:
+    import pystache
+except ImportError:
+    HTML_REPORT_CAPABLE = False
+else:
+    HTML_REPORT_CAPABLE = True
 
 from avocado import runtime
 from avocado.core import exit_codes
@@ -248,6 +253,9 @@ class HTML(plugin.Plugin):
     enabled = True
 
     def configure(self, parser):
+        if HTML_REPORT_CAPABLE is False:
+            self.enabled = False
+            return
         self.parser = parser
         self.parser.runner.add_argument(
             '--html', type=str,
diff --git a/avocado/plugins/multiplexer.py b/avocado/plugins/multiplexer.py
index 8c7bd695b0d15871bf9754e37f5cf3409f6cd01b..50d24535a520d8df94dc82aeadd7c6dd4dca628c 100644
--- a/avocado/plugins/multiplexer.py
+++ b/avocado/plugins/multiplexer.py
@@ -32,6 +32,9 @@ class Multiplexer(plugin.Plugin):
     enabled = True
 
     def configure(self, parser):
+        if multiplexer.MULTIPLEX_CAPABLE is False:
+            self.enabled = False
+            return
         self.parser = parser.subcommands.add_parser(
             'multiplex',
             help='Generate a list of dictionaries with params from a multiplex file')
diff --git a/avocado/plugins/runner.py b/avocado/plugins/runner.py
index c02863107f591265d980e5c2aee21cefd368a68b..3164bb2f830978d8baf11aa212ed6a83c6e27035 100644
--- a/avocado/plugins/runner.py
+++ b/avocado/plugins/runner.py
@@ -23,6 +23,7 @@ from avocado.core import exit_codes
 from avocado.plugins import plugin
 from avocado.core import output
 from avocado import job
+from avocado import multiplexer
 
 
 class TestRunner(plugin.Plugin):
@@ -107,13 +108,14 @@ class TestRunner(plugin.Plugin):
                                      'present for the test. '
                                      'Current: False (output check enabled)'))
 
-        mux = self.parser.add_argument_group('multiplex arguments')
-        mux.add_argument('-m', '--multiplex-files', nargs='*', default=None,
-                         help='Path(s) to a avocado multiplex (.yaml) file(s)')
-        mux.add_argument('--filter-only', nargs='*', default=[],
-                         help='Filter only path(s) from multiplexing')
-        mux.add_argument('--filter-out', nargs='*', default=[],
-                         help='Filter out path(s) from multiplexing')
+        if multiplexer.MULTIPLEX_CAPABLE:
+            mux = self.parser.add_argument_group('multiplex arguments')
+            mux.add_argument('-m', '--multiplex-files', nargs='*', default=None,
+                             help='Path(s) to a avocado multiplex (.yaml) file(s)')
+            mux.add_argument('--filter-only', nargs='*', default=[],
+                             help='Filter only path(s) from multiplexing')
+            mux.add_argument('--filter-out', nargs='*', default=[],
+                             help='Filter out path(s) from multiplexing')
 
         super(TestRunner, self).configure(self.parser)
         # Export the test runner parser back to the main parser