diff --git a/cli/cmdlineparser.cpp b/cli/cmdlineparser.cpp
index 3038e88f7..e2ab8083e 100644
--- a/cli/cmdlineparser.cpp
+++ b/cli/cmdlineparser.cpp
@@ -460,13 +460,6 @@ bool CmdLineParser::ParseFromArgs(int argc, const char* const argv[])
             }
         }
 
-        // Posix compliant code checks
-        else if (strcmp(argv[i], "--posix") == 0)
-        {
-            _settings->_posix = true;
-        }
-
-
         // deprecated: auto deallocated classes..
         else if (strcmp(argv[i], "--auto-dealloc") == 0)
         {
@@ -662,6 +655,9 @@ void CmdLineParser::PrintHelp()
               "                          * missingInclude\n"
               "                                  Warn if there are missing includes.\n"
               "                                  For detailed information use --check-config\n"
+              "                           * posix\n"
+              "                                  Enable checks specific for POSIX-compiliant\n"
+              "                                  code.\n"
               "                         Several ids can be given if you separate them with\n"
               "                         commas.\n"
               "    --error-exitcode=<n> If errors are found, integer [n] is returned instead\n"
@@ -689,7 +685,6 @@ void CmdLineParser::PrintHelp()
               "                         more comments, like: // cppcheck-suppress warningId\n"
               "                         on the lines before the warning to suppress.\n"
               "    -j <jobs>            Start [jobs] threads to do the checking simultaneously.\n"
-              "    --posix              Enable checks applicable only to Posix compliant code.\n"
               "    -q, --quiet          Only print error messages.\n"
               "    --report-progress    Report progress messages while checking a file.\n"
 #ifdef HAVE_RULES
diff --git a/lib/checknonreentrantfunctions.cpp b/lib/checknonreentrantfunctions.cpp
index 7acd88c75..0b83e5395 100644
--- a/lib/checknonreentrantfunctions.cpp
+++ b/lib/checknonreentrantfunctions.cpp
@@ -33,7 +33,7 @@ CheckNonReentrantFunctions instance;
 
 void CheckNonReentrantFunctions::nonReentrantFunctions()
 {
-    if (!_settings->_posix || !_settings->_checkCodingStyle)
+    if (!_settings->isEnabled("posix") || !_settings->_checkCodingStyle)
         return;
 
     // Don't check C# and Java code
diff --git a/lib/settings.cpp b/lib/settings.cpp
index d14a24eba..93c1fcc6f 100644
--- a/lib/settings.cpp
+++ b/lib/settings.cpp
@@ -36,7 +36,6 @@ Settings::Settings()
     _inlineSuppressions = false;
     _verbose = false;
     _force = false;
-    _posix = false;
     _xml = false;
     _xml_version = 1;
     _jobs = 1;
@@ -399,6 +398,7 @@ std::string Settings::addEnabled(const std::string &str)
     id.insert("missingInclude");
     id.insert("unusedFunction");
     id.insert("information");
+    id.insert("posix");
 
     if (str == "all")
     {
diff --git a/lib/settings.h b/lib/settings.h
index cf137895f..0ad9426cc 100644
--- a/lib/settings.h
+++ b/lib/settings.h
@@ -96,9 +96,6 @@ public:
     /** @brief write XML results (--xml) */
     bool _xml;
 
-    /** @brief check posix functions (--posix) */
-    bool _posix;
-
     /** @brief XML version (--xmlver=..) */
     int _xml_version;
 
diff --git a/test/testcmdlineparser.cpp b/test/testcmdlineparser.cpp
index 25eef78ae..f3f5174c1 100644
--- a/test/testcmdlineparser.cpp
+++ b/test/testcmdlineparser.cpp
@@ -62,6 +62,7 @@ private:
         TEST_CASE(enabledStyle);
         TEST_CASE(enabledUnusedFunction);
         TEST_CASE(enabledMissingInclude);
+        TEST_CASE(enablePosix);
         TEST_CASE(errorExitcode);
         TEST_CASE(errorExitcodeMissing);
         TEST_CASE(errorExitcodeStr);
@@ -100,7 +101,6 @@ private:
         TEST_CASE(ignorefilepaths1);
         TEST_CASE(ignorefilepaths2);
         TEST_CASE(checkconfig);
-        TEST_CASE(posix);
         TEST_CASE(unknownParam);
     }
 
@@ -421,6 +421,16 @@ private:
         ASSERT(settings.isEnabled("missingInclude"));
     }
 
+    void enablePosix()
+    {
+        REDIRECT;
+        const char *argv[] = {"cppcheck", "--enable=posix", "file.cpp"};
+        Settings settings;
+        CmdLineParser parser(&settings);
+        ASSERT(parser.ParseFromArgs(3, argv));
+        ASSERT(settings.isEnabled("posix"));
+    }
+
     void errorExitcode()
     {
         REDIRECT;
@@ -813,16 +823,6 @@ private:
         ASSERT_EQUALS(true, settings.checkConfiguration);
     }
 
-    void posix()
-    {
-        REDIRECT;
-        const char *argv[] = {"cppcheck", "--posix", "file.cpp"};
-        Settings settings;
-        CmdLineParser parser(&settings);
-        ASSERT(parser.ParseFromArgs(3, argv));
-        ASSERT_EQUALS(true, settings._posix);
-    }
-
     void unknownParam()
     {
         REDIRECT;
diff --git a/test/testnonreentrantfunctions.cpp b/test/testnonreentrantfunctions.cpp
index 70b508cb0..67ba2d6fa 100644
--- a/test/testnonreentrantfunctions.cpp
+++ b/test/testnonreentrantfunctions.cpp
@@ -45,7 +45,7 @@ private:
         errout.str("");
 
         Settings settings;
-        settings._posix = true;
+        settings.addEnabled("posix");
         settings.inconclusive = true;
         settings._checkCodingStyle = true;