diff --git a/test/testcmdlineparser.cpp b/test/testcmdlineparser.cpp
index b48ed5101..f4932f353 100644
--- a/test/testcmdlineparser.cpp
+++ b/test/testcmdlineparser.cpp
@@ -103,7 +103,6 @@ private:
         TEST_CASE(maxConfigsInvalid);
         TEST_CASE(maxConfigsTooSmall);
         TEST_CASE(reportProgressTest); // "Test" suffix to avoid hiding the parent's reportProgress
-        TEST_CASE(stdposix);
         TEST_CASE(stdc99);
         TEST_CASE(stdcpp11);
         TEST_CASE(platform);
@@ -694,14 +693,6 @@ private:
         ASSERT(settings.reportProgress);
     }
 
-    void stdposix() {
-        REDIRECT;
-        const char * const argv[] = {"cppcheck", "--std=posix", "file.cpp"};
-        settings.standards.posix = false;
-        ASSERT(defParser.parseFromArgs(3, argv));
-        ASSERT(settings.standards.posix);
-    }
-
     void stdc99() {
         REDIRECT;
         const char * const argv[] = {"cppcheck", "--std=c99", "file.cpp"};
diff --git a/test/testfunctions.cpp b/test/testfunctions.cpp
index 7f3b630e0..1a669736a 100644
--- a/test/testfunctions.cpp
+++ b/test/testfunctions.cpp
@@ -38,7 +38,7 @@ private:
         settings.addEnabled("style");
         settings.addEnabled("warning");
         settings.addEnabled("portability");
-        settings.standards.posix = true;
+        settings.libraries.push_back("posix");
         settings.standards.c = Standards::C11;
         settings.standards.cpp = Standards::CPP11;
         LOAD_LIB_2(settings.library, "std.cfg");
diff --git a/test/testmemleak.cpp b/test/testmemleak.cpp
index 88e82ac74..e5160f678 100644
--- a/test/testmemleak.cpp
+++ b/test/testmemleak.cpp
@@ -1789,7 +1789,7 @@ private:
 
     void run() OVERRIDE {
         settings.inconclusive = true;
-        settings.standards.posix = true;
+        settings.libraries.push_back("posix");
         settings.addEnabled("warning");
 
         LOAD_LIB_2(settings.library, "std.cfg");
diff --git a/test/testother.cpp b/test/testother.cpp
index 560da47cc..8e1e1f41d 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -300,7 +300,7 @@ private:
     void checkposix(const char code[]) {
         static Settings settings;
         settings.addEnabled("warning");
-        settings.standards.posix = true;
+        settings.libraries.push_back("posix");
 
         check(code,
               nullptr, // filename