diff --git a/include/ntapi/nt_string.h b/include/ntapi/nt_string.h
index fd9b312..10a413b 100644
--- a/include/ntapi/nt_string.h
+++ b/include/ntapi/nt_string.h
@@ -15,6 +15,12 @@ typedef int __cdecl ntapi_sprintf(
 	const char * format,
 	...);
 
+typedef int __cdecl ntapi_snprintf(
+	char * buffer,
+	size_t size,
+	const char * format,
+	...);
+
 
 typedef size_t __cdecl ntapi_strlen(const char * str);
 
diff --git a/include/ntapi/ntapi.h b/include/ntapi/ntapi.h
index 8af844f..0d9f432 100644
--- a/include/ntapi/ntapi.h
+++ b/include/ntapi/ntapi.h
@@ -362,6 +362,7 @@ typedef struct _ntapi_vtbl {
 	/* nt_string.h */
 	ntapi_memset *					memset;
 	ntapi_sprintf *					sprintf;
+	ntapi_snprintf *				snprintf;
 	ntapi_strlen *					strlen;
 	/* imported symbols: tail */
 
diff --git a/src/internal/ntapi_hash_table.h b/src/internal/ntapi_hash_table.h
index 0fc43a6..1eacf88 100644
--- a/src/internal/ntapi_hash_table.h
+++ b/src/internal/ntapi_hash_table.h
@@ -39,6 +39,7 @@
 	{0x1c0197e6,	(233)},	/* ZwAllocateUuids */ \
 	{0x1c7a90a1,	(5)},	/* ZwQuerySecurityObject */ \
 	{0x1cf668c5,	(194)},	/* ZwQueryKey */ \
+	{0x21b850be,	(250)},	/* _snprintf */ \
 	{0x2259fc62,	(2)},	/* ZwDuplicateObject */ \
 	{0x24e09c64,	(18)},	/* ZwSystemDebugControl */ \
 	{0x255bf138,	(142)},	/* ZwReplyWaitReplyPort */ \
@@ -261,6 +262,6 @@
 	{0xf425639c,	(104)},	/* ZwOpenMutant */ \
 	{0xfde47817,	(94)},	/* ZwSetEvent */ \
 
-#define __NT_IMPORTED_SYMBOLS_ARRAY_SIZE	250
+#define __NT_IMPORTED_SYMBOLS_ARRAY_SIZE	251
 
 #endif