diff --git a/modules/rostests/apitests/kernel32/CMakeLists.txt b/modules/rostests/apitests/kernel32/CMakeLists.txt
index 9e0ca36563..a6b554fe28 100644
--- a/modules/rostests/apitests/kernel32/CMakeLists.txt
+++ b/modules/rostests/apitests/kernel32/CMakeLists.txt
@@ -17,6 +17,7 @@ list(APPEND SOURCE
     GetCurrentDirectory.c
     GetDriveType.c
     GetModuleFileName.c
+    GetPriorityClass.c
     GetVolumeInformation.c
     interlck.c
     IsDBCSLeadByteEx.c
diff --git a/modules/rostests/apitests/kernel32/GetPriorityClass.c b/modules/rostests/apitests/kernel32/GetPriorityClass.c
new file mode 100644
index 0000000000..f144bcdae4
--- /dev/null
+++ b/modules/rostests/apitests/kernel32/GetPriorityClass.c
@@ -0,0 +1,41 @@
+/*
+ * PROJECT:         ReactOS api tests
+ * LICENSE:         GPLv2+ - See COPYING in the top level directory
+ * PURPOSE:         Test spoiling of StaticUnicodeString by CreateProcessA
+ * PROGRAMMERS:     Mark Jansen
+ */
+
+#include "precomp.h"
+#include <stdio.h>
+
+#include <ndk/rtlfuncs.h>
+
+START_TEST(GetPriorityClass)
+{
+    PUNICODE_STRING StaticString;
+    UNICODE_STRING CompareString;
+    BOOL Process;
+    STARTUPINFO si = {0};
+    PROCESS_INFORMATION pi = {0};
+    LONG Result;
+
+    StaticString = &NtCurrentTeb()->StaticUnicodeString;
+    RtlInitUnicodeString(&CompareString, L"--sentinel--");
+    RtlCopyUnicodeString(StaticString, &CompareString);
+
+    si.cb = sizeof(si);
+    Process = CreateProcessA("ApplicationName", "CommandLine", NULL, NULL, FALSE, 0, NULL, "CurrentDir", &si, &pi);
+    ok_int(Process, 0);
+
+    Result = RtlCompareUnicodeString(StaticString, &CompareString, TRUE);
+    ok(!Result, "Expected %s to equal %s\n",
+       wine_dbgstr_wn(StaticString->Buffer, StaticString->Length / sizeof(WCHAR)),
+       wine_dbgstr_wn(CompareString.Buffer, CompareString.Length / sizeof(WCHAR)));
+
+    Result = GetPriorityClass(pi.hProcess);
+    printf("Process Priority is '%lx'.\n", Result);
+
+    Result = GetPriorityClass((HANDLE)0xFFFFFFFF);
+    printf("Process Priority for INVALID HANDLE is '%lx'.\n", Result);
+
+}
diff --git a/modules/rostests/apitests/kernel32/testlist.c b/modules/rostests/apitests/kernel32/testlist.c
index 35240ac377..0130550147 100644
--- a/modules/rostests/apitests/kernel32/testlist.c
+++ b/modules/rostests/apitests/kernel32/testlist.c
@@ -16,6 +16,7 @@ extern void func_GetComputerNameEx(void);
 extern void func_GetCurrentDirectory(void);
 extern void func_GetDriveType(void);
 extern void func_GetModuleFileName(void);
+extern void func_GetPriorityClass(void);
 extern void func_GetVolumeInformation(void);
 extern void func_interlck(void);
 extern void func_IsDBCSLeadByteEx(void);
@@ -51,6 +52,7 @@ const struct test winetest_testlist[] =
     { "GetCurrentDirectory",         func_GetCurrentDirectory },
     { "GetDriveType",                func_GetDriveType },
     { "GetModuleFileName",           func_GetModuleFileName },
+    { "GetPriorityClass",            func_GetPriorityClass },
     { "GetVolumeInformation",        func_GetVolumeInformation },
     { "interlck",                    func_interlck },
     { "IsDBCSLeadByteEx",            func_IsDBCSLeadByteEx },