diff --git a/dlls/msvcr80/msvcr80.spec b/dlls/msvcr80/msvcr80.spec
index 7294d89568e..66b56b0eba8 100644
--- a/dlls/msvcr80/msvcr80.spec
+++ b/dlls/msvcr80/msvcr80.spec
@@ -470,7 +470,7 @@
 @ stub _get_errno
 @ stub _get_fmode
 @ stub _get_heap_handle
-@ stub _get_invalid_parameter_handler
+@ cdecl _get_invalid_parameter_handler() msvcr90._get_invalid_parameter_handler
 @ cdecl _get_osfhandle(long) msvcrt._get_osfhandle
 @ stub _get_osplatform
 @ stub _get_osver
@@ -533,7 +533,7 @@
 @ stub _inp
 @ stub _inpd
 @ stub _inpw
-@ stub _invalid_parameter
+@ extern _invalid_parameter msvcrt._invalid_parameter
 @ stub _invalid_parameter_noinfo
 @ stub _invoke_watson
 @ extern _iob msvcrt._iob
@@ -873,7 +873,7 @@
 @ stub _set_errno
 @ cdecl _set_error_mode(long) msvcrt._set_error_mode
 @ stub _set_fmode
-@ stub _set_invalid_parameter_handler
+@ cdecl _set_invalid_parameter_handler(ptr) msvcr90._set_invalid_parameter_handler
 @ stub _set_malloc_crt_max_wait
 @ stub _set_output_format
 @ stub _set_printf_count_output
diff --git a/dlls/msvcr90/msvcr90.c b/dlls/msvcr90/msvcr90.c
index 1bada8b1d84..4fa65b5e544 100644
--- a/dlls/msvcr90/msvcr90.c
+++ b/dlls/msvcr90/msvcr90.c
@@ -27,6 +27,7 @@
 WINE_DEFAULT_DEBUG_CHANNEL(msvcr90);
 
 typedef int (CDECL *_INITTERM_E_FN)(void);
+typedef void (__cdecl *_invalid_parameter_handler)(const wchar_t*, const wchar_t*, const wchar_t*, unsigned, unsigned*);
 
 /*********************************************************************
  *  DllMain (MSVCR90.@)
@@ -76,6 +77,30 @@ void * CDECL _encoded_null(void)
     return MSVCR90_encode_pointer(NULL);
 }
 
+/*********************************************************************
+ *  _get_invalid_parameter_handler (MSVCR90.@)
+ */
+_invalid_parameter_handler CDECL _get_invalid_parameter_handler(void)
+{
+    TRACE("\n");
+    return *((_invalid_parameter_handler*)GetProcAddress(GetModuleHandleA("msvcrt.dll"), "_invalid_parameter"));
+}
+
+/*********************************************************************
+ *  _set_invalid_parameter_handler (MSVCR90.@)
+ */
+_invalid_parameter_handler CDECL _set_invalid_parameter_handler(_invalid_parameter_handler handler)
+{
+    _invalid_parameter_handler *ptr = (_invalid_parameter_handler*)GetProcAddress(
+            GetModuleHandleA("msvcrt.dll"), "_invalid_parameter");
+    _invalid_parameter_handler old = *ptr;
+
+    TRACE("(%p)\n", handler);
+
+    *ptr = handler;
+    return old;
+}
+
 /*********************************************************************
  *  _initterm_e (MSVCR90.@)
  *
diff --git a/dlls/msvcr90/msvcr90.spec b/dlls/msvcr90/msvcr90.spec
index 9feaa477eb5..0255b96adf2 100644
--- a/dlls/msvcr90/msvcr90.spec
+++ b/dlls/msvcr90/msvcr90.spec
@@ -462,7 +462,7 @@
 @ stub _get_errno
 @ stub _get_fmode
 @ stub _get_heap_handle
-@ stub _get_invalid_parameter_handler
+@ cdecl _get_invalid_parameter_handler()
 @ cdecl _get_osfhandle(long) msvcrt._get_osfhandle
 @ stub _get_output_format
 @ stub _get_pgmptr
@@ -521,7 +521,7 @@
 @ stub _inp
 @ stub _inpd
 @ stub _inpw
-@ stub _invalid_parameter
+@ extern _invalid_parameter msvcrt._invalid_parameter
 @ stub _invalid_parameter_noinfo
 @ stub _invoke_watson
 @ extern _iob msvcrt._iob
@@ -859,7 +859,7 @@
 @ stub _set_errno
 @ cdecl _set_error_mode(long) msvcrt._set_error_mode
 @ stub _set_fmode
-@ stub _set_invalid_parameter_handler
+@ cdecl _set_invalid_parameter_handler(ptr)
 @ stub _set_malloc_crt_max_wait
 @ stub _set_output_format
 @ stub _set_printf_count_output
diff --git a/dlls/msvcr90/tests/msvcr90.c b/dlls/msvcr90/tests/msvcr90.c
index f332622baf3..03d75eef9cb 100644
--- a/dlls/msvcr90/tests/msvcr90.c
+++ b/dlls/msvcr90/tests/msvcr90.c
@@ -25,6 +25,7 @@
 #include <errno.h>
 #include "wine/test.h"
 
+static _invalid_parameter_handler (__cdecl *p_set_invalid_parameter_handler)(_invalid_parameter_handler);
 typedef int (__cdecl *_INITTERM_E_FN)(void);
 static int (__cdecl *p_initterm_e)(_INITTERM_E_FN *table, _INITTERM_E_FN *end);
 static void* (__cdecl *p_encode_pointer)(void *);
@@ -35,6 +36,17 @@ int cb_called[4];
 
 /* ########## */
 
+void __cdecl test_invalid_parameter_handler(const wchar_t *expression,
+        const wchar_t *function, const wchar_t *file,
+        unsigned line, unsigned *res)
+{
+    ok(expression == NULL, "expression is not NULL\n");
+    ok(function == NULL, "function is not NULL\n");
+    ok(file == NULL, "file is not NULL\n");
+    ok(line == 0, "line = %u\n", line);
+    ok(res == NULL, "res = %p\n", res);
+}
+
 static int initterm_cb0(void)
 {
     cb_called[0]++;
@@ -169,6 +181,11 @@ START_TEST(msvcr90)
         return;
     }
 
+    p_set_invalid_parameter_handler = (void *) GetProcAddress(hcrt, "_set_invalid_parameter_handler");
+    if(p_set_invalid_parameter_handler)
+        ok(p_set_invalid_parameter_handler(test_invalid_parameter_handler) == NULL,
+                "Invalid parameter handler was already set\n");
+
     p_initterm_e = (void *) GetProcAddress(hcrt, "_initterm_e");
     p_encode_pointer = (void *) GetProcAddress(hcrt, "_encode_pointer");
     p_decode_pointer = (void *) GetProcAddress(hcrt, "_decode_pointer");
diff --git a/dlls/msvcrt/errno.c b/dlls/msvcrt/errno.c
index 413ab391fc0..c4c861885e9 100644
--- a/dlls/msvcrt/errno.c
+++ b/dlls/msvcrt/errno.c
@@ -117,6 +117,7 @@ char *MSVCRT__sys_errlist[] =
 };
 
 unsigned int MSVCRT__sys_nerr = sizeof(MSVCRT__sys_errlist)/sizeof(MSVCRT__sys_errlist[0]) - 1;
+MSVCRT_invalid_parameter_handler MSVCRT_invalid_parameter = NULL;
 
 /* INTERNAL: Set the crt and dos errno's from the OS error given. */
 void msvcrt_set_errno(int err)
diff --git a/dlls/msvcrt/msvcrt.h b/dlls/msvcrt/msvcrt.h
index 1de0c7ba216..1000f3ddb2d 100644
--- a/dlls/msvcrt/msvcrt.h
+++ b/dlls/msvcrt/msvcrt.h
@@ -75,6 +75,7 @@ typedef void (*__cdecl MSVCRT__se_translator_function)(unsigned int code, struct
 typedef void (*__cdecl MSVCRT__beginthread_start_routine_t)(void *);
 typedef unsigned int (__stdcall *MSVCRT__beginthreadex_start_routine_t)(void *);
 typedef int (*__cdecl MSVCRT__onexit_t)(void);
+typedef void (__cdecl *MSVCRT_invalid_parameter_handler)(const wchar_t*, const wchar_t*, const wchar_t*, unsigned, unsigned*);
 
 typedef struct {long double x;} MSVCRT__LDOUBLE;
 
@@ -124,6 +125,7 @@ extern LCID MSVCRT_current_lc_all_lcid;
 extern WORD MSVCRT__ctype [257];
 extern WORD MSVCRT_current_ctype[257];
 extern WORD* MSVCRT__pctype;
+extern MSVCRT_invalid_parameter_handler MSVCRT_invalid_parameter;
 
 void   msvcrt_set_errno(int);
 
diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index 988d48e0509..bee7ba1947d 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -479,7 +479,7 @@
 @ stub _inp #(long) -i386
 @ stub _inpd #(long) -i386
 @ stub _inpw #(long) -i386
-# stub _invalid_parameter
+@ extern _invalid_parameter MSVCRT_invalid_parameter
 @ extern _iob MSVCRT__iob
 # stub _isalnum_l
 # stub _isalpha_l
diff --git a/dlls/msvcrt/tests/string.c b/dlls/msvcrt/tests/string.c
index 6fd64d9ee7a..e19c54381af 100644
--- a/dlls/msvcrt/tests/string.c
+++ b/dlls/msvcrt/tests/string.c
@@ -53,6 +53,7 @@ static int (__cdecl *p_mbsnbcpy_s)(unsigned char * dst, size_t size, const unsig
 static int (__cdecl *p_wcscpy_s)(wchar_t *wcDest, size_t size, const wchar_t *wcSrc);
 static int (__cdecl *p_wcsupr_s)(wchar_t *str, size_t size);
 static size_t (__cdecl *p_strnlen)(const char *, size_t);
+static _invalid_parameter_handler *p_invalid_parameter;
 static int *p__mb_cur_max;
 static unsigned char *p_mbctype;
 
@@ -61,6 +62,17 @@ static unsigned char *p_mbctype;
 
 HMODULE hMsvcrt;
 
+void __cdecl test_invalid_parameter_handler(const wchar_t *expression,
+        const wchar_t *function, const wchar_t *file,
+        unsigned line, unsigned *res)
+{
+    ok(expression == NULL, "expression is not NULL\n");
+    ok(function == NULL, "function is not NULL\n");
+    ok(file == NULL, "file is not NULL\n");
+    ok(line == 0, "line = %u\n", line);
+    ok(res == NULL, "res = %p\n", res);
+}
+
 static void test_swab( void ) {
     char original[]  = "BADCFEHGJILKNMPORQTSVUXWZY@#";
     char expected1[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ@#";
@@ -946,6 +958,9 @@ START_TEST(string)
     SET(pmemcmp,"memcmp");
     SET(p_mbctype,"_mbctype");
     SET(p__mb_cur_max,"__mb_cur_max");
+    p_invalid_parameter = (void *)GetProcAddress( hMsvcrt,"_invalid_parameter");
+    if(p_invalid_parameter)
+        *p_invalid_parameter = test_invalid_parameter_handler;
     pstrcpy_s = (void *)GetProcAddress( hMsvcrt,"strcpy_s" );
     pstrcat_s = (void *)GetProcAddress( hMsvcrt,"strcat_s" );
     p_mbsnbcpy_s = (void *)GetProcAddress( hMsvcrt,"_mbsnbcpy_s" );
diff --git a/include/msvcrt/stdlib.h b/include/msvcrt/stdlib.h
index 2531f73b5f6..617bd1c5b68 100644
--- a/include/msvcrt/stdlib.h
+++ b/include/msvcrt/stdlib.h
@@ -261,4 +261,8 @@ static inline ldiv_t __wine_msvcrt_ldiv(__msvcrt_long num, __msvcrt_long denom)
 
 #include <poppack.h>
 
+typedef void (__cdecl *_invalid_parameter_handler)(const wchar_t*, const wchar_t*, const wchar_t*, unsigned, unsigned*);
+_invalid_parameter_handler __cdecl _set_invalid_parameter_handler(_invalid_parameter_handler);
+_invalid_parameter_handler __cdecl _get_invalid_parameter_handler(void);
+
 #endif /* __WINE_STDLIB_H */