diff --git a/cfg/posix.cfg b/cfg/posix.cfg
index 53783c08e..7ef1234fc 100644
--- a/cfg/posix.cfg
+++ b/cfg/posix.cfg
@@ -441,6 +441,7 @@
     </arg>
   </function>
   <function name="write">
+    <noreturn>false</noreturn>
     <arg nr="1">
       <not-uninit/>
     </arg>
diff --git a/test/cfg/posix.c b/test/cfg/posix.c
index 9aaf42881..b1d4f372f 100644
--- a/test/cfg/posix.c
+++ b/test/cfg/posix.c
@@ -114,3 +114,14 @@ void invalidFunctionArg() {
     // cppcheck-suppress invalidFunctionArg
     usleep(1000000);
 }
+
+void uninitvar(int fd) {
+    int x;
+    char buf[2];
+    // cppcheck-suppress uninitvar
+    write(x,"ab",2);
+    // cppcheck-suppress uninitvar
+    write(fd,buf,2);
+    // cppcheck-suppress uninitvar
+    write(fd,"ab",x);
+}
diff --git a/test/testuninitvar.cpp b/test/testuninitvar.cpp
index e6a2279ce..f28f5fc5b 100644
--- a/test/testuninitvar.cpp
+++ b/test/testuninitvar.cpp
@@ -3850,65 +3850,6 @@ private:
         ASSERT_EQUALS("[test.cpp:6]: (debug) assertion failed '} while ('\n", errout.str());
     }
 
-    void uninitvar_posix_write() { // #6325
-        // Load posix library file
-        LOAD_LIB_2(settings.library, "posix.cfg");
-
-        // check the first parameter of write
-        checkUninitVar("void uninitvar(char *buf)\n"
-                       "{\n"
-                       "    int fd;\n"
-                       "    write(fd, buf, sizeof(buf));\n"
-                       "}");
-        ASSERT_EQUALS("[test.cpp:4]: (error) Uninitialized variable: fd\n", errout.str());
-
-        checkUninitVarB("void no_uninitvar(int fd, char *buf)\n"
-                        "{\n"
-                        "    write(fd, buf, 8);\n"
-                        "}");
-        ASSERT_EQUALS("", errout.str());
-
-
-        // check the second parameter of the posix function write
-        checkUninitVar("void uninitvar() {\n"
-                       "    char *buf;\n"
-                       "    write(STDOUT_FILENO, buf, sizeof(buf));\n"
-                       "}");
-        ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: buf\n", errout.str());
-
-        checkUninitVar("void uninitvar() {\n"
-                       "    char buf[2];\n"
-                       "    write(STDOUT_FILENO, buf, 2);\n"
-                       "}");
-        ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: buf\n", errout.str());
-
-        // avoid false positives
-        checkUninitVarB("void no_uninitvar(char *buf) {\n"
-                        "    write(STDOUT_FILENO, buf, 8);\n"
-                        "}");
-        ASSERT_EQUALS("", errout.str());
-
-        checkUninitVarB("void no_uninitvar() {\n"
-                        "    char buf[1] = {'c'};\n"
-                        "    write(STDOUT_FILENO, &buf, 1);\n"
-                        "}");
-        ASSERT_EQUALS("", errout.str());
-
-
-        // check the third parameter of the posix function write
-        checkUninitVar2("void uninitvar(char *buf) {\n"
-                        "    int nbytes;\n"
-                        "    write(STDOUT_FILENO, buf, nbytes);\n"
-                        "}");
-        ASSERT_EQUALS("[test.cpp:3]: (error) Uninitialized variable: nbytes\n", errout.str());
-
-        checkUninitVarB("void no_uninitvar(char *buf, int nbytes)\n"
-                        "{\n"
-                        "    write(STDOUT_FILENO, buf, nbytes);\n"
-                        "}");
-        ASSERT_EQUALS("", errout.str());
-    }
-
     void checkDeadPointer(const char code[]) {
         // Clear the error buffer..
         errout.str("");