diff --git a/HISTORY.rst b/HISTORY.rst
index b9a19c34..763eb9d3 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -20,7 +20,7 @@ PlatformIO 3.0
     + Check library compatibility with project environment before building
       (`issue #415 <https://github.com/platformio/platformio/issues/415>`_)
     + Control Library Dependency Finder for compatibility using
-      `lib_compat_level <http://docs.platformio.org/en/latest/projectconf.html#lib-compat-level>`__
+      `lib_compat_mode <http://docs.platformio.org/en/latest/projectconf.html#lib-compat-mode>`__
       option
     + Custom library storages/directories with
       `lib_extra_dirs <http://docs.platformio.org/en/latest/projectconf.html#lib-extra-dirs>`__ option
diff --git a/docs/faq.rst b/docs/faq.rst
index 72b13163..e8f650d5 100644
--- a/docs/faq.rst
+++ b/docs/faq.rst
@@ -57,12 +57,12 @@ order:
 2. :ref:`projectconf_pio_lib_dir`
 3. :ref:`projectconf_pio_home_dir`/lib
 
-Library Dependency Finder has a few key factors from :ref:`projectconf`:
+Library Dependency Finder has a few controls from :ref:`projectconf`:
 
 * :ref:`projectconf_lib_ignore`
 * :ref:`projectconf_lib_deep_search`
 * :ref:`projectconf_lib_extra_dirs`
-* :ref:`projectconf_lib_compat_level`
+* :ref:`projectconf_lib_compat_mode`
 
 Command completion in Terminal
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/docs/projectconf.rst b/docs/projectconf.rst
index 6f5ae26f..3f4a9005 100644
--- a/docs/projectconf.rst
+++ b/docs/projectconf.rst
@@ -729,25 +729,25 @@ Example:
     [env:custom_lib_dirs]
     lib_extra_dirs = /path/to/private/dir1,/path/to/private/dir2
 
-.. _projectconf_lib_compat_level:
+.. _projectconf_lib_compat_mode:
 
-``lib_compat_level``
-^^^^^^^^^^^^^^^^^^^^
+``lib_compat_mode``
+^^^^^^^^^^^^^^^^^^^
 
 Please make sure to read :ref:`faq_ldf` guides first.
 
-Library compatibility level that allows to control Library Dependency Finder
+Library compatibility mode that allows to control Library Dependency Finder
 strictness. If library contains manifest file (:ref:`library_config`,
 ``library.properties``, ``module.json``), then LDF check compatibility of this
-library with real build environment. Available compatibility levels:
+library with real build environment. Available compatibility modes:
 
-* ``0`` - don't check for compatibility (disable)
+* ``0`` - don't check for compatibility
 * ``1`` - check for the compatibility with :ref:`projectconf_env_framework`
   from build environment
 * ``2`` - check for the compatibility with :ref:`projectconf_env_framework`
   and :ref:`projectconf_env_platform` from build environment.
 
-By default, this value is set to ``lib_compat_level = 1`` and means that LDF
+By default, this value is set to ``lib_compat_mode = 1`` and means that LDF
 will check only for framework compatibility.
 
 -----------
diff --git a/platformio/builder/main.py b/platformio/builder/main.py
index 1fc1d079..40184898 100644
--- a/platformio/builder/main.py
+++ b/platformio/builder/main.py
@@ -45,7 +45,7 @@ commonvars.AddVariables(
 
     # library options
     ("LIB_DEEP_SEARCH",),
-    ("LIB_COMPAT_LEVEL",),
+    ("LIB_COMPAT_MODE",),
     ("LIB_IGNORE",),
     ("LIB_FORCE",),
     ("LIB_EXTRA_DIRS",),
diff --git a/platformio/builder/tools/piolib.py b/platformio/builder/tools/piolib.py
index ce1a110a..7e94f784 100644
--- a/platformio/builder/tools/piolib.py
+++ b/platformio/builder/tools/piolib.py
@@ -463,7 +463,7 @@ def GetLibBuilders(env):
     env_frameworks = [
         f.lower().strip() for f in env.get("PIOFRAMEWORK", "").split(",")
     ]
-    compat_level = int(env.get("LIB_COMPAT_LEVEL", 1))
+    compat_mode = int(env.get("LIB_COMPAT_MODE", 1))
 
     for libs_dir in env['LIBSOURCE_DIRS']:
         libs_dir = env.subst(libs_dir)
@@ -477,14 +477,14 @@ def GetLibBuilders(env):
                 if not env.GetOption("silent"):
                     sys.stderr.write("Ignored library %s\n" % lb.path)
                 continue
-            if compat_level > 1 and not lb.is_platform_compatible(env[
+            if compat_mode > 1 and not lb.is_platform_compatible(env[
                     'PIOPLATFORM']):
                 if not env.GetOption("silent"):
                     sys.stderr.write("Platform incompatible library %s\n" %
                                      lb.path)
                 continue
-            if compat_level > 0 and not any([lb.is_framework_compatible(f)
-                                             for f in env_frameworks]):
+            if compat_mode > 0 and not any([lb.is_framework_compatible(f)
+                                            for f in env_frameworks]):
                 if not env.GetOption("silent"):
                     sys.stderr.write("Framework incompatible library %s\n" %
                                      lb.path)