diff --git a/arch/i386/syscall_arch.h b/arch/i386/syscall_arch.h
index f92b7aa9..b7c77863 100644
--- a/arch/i386/syscall_arch.h
+++ b/arch/i386/syscall_arch.h
@@ -14,6 +14,7 @@
 
 static inline long __syscall0(long n)
 {
+	if (n>350) return -ENOSYS;
 	unsigned long __ret;
 	__asm__ __volatile__ (SYSCALL_INSNS : "=a"(__ret) : "a"(n) : "memory");
 	return __ret;
@@ -21,6 +22,7 @@ static inline long __syscall0(long n)
 
 static inline long __syscall1(long n, long a1)
 {
+	if (n>350) return -ENOSYS;
 	unsigned long __ret;
 	__asm__ __volatile__ (SYSCALL_INSNS_12 : "=a"(__ret) : "a"(n), "d"(a1) : "memory");
 	return __ret;
@@ -28,6 +30,7 @@ static inline long __syscall1(long n, long a1)
 
 static inline long __syscall2(long n, long a1, long a2)
 {
+	if (n>350) return -ENOSYS;
 	unsigned long __ret;
 	__asm__ __volatile__ (SYSCALL_INSNS_12 : "=a"(__ret) : "a"(n), "d"(a1), "c"(a2) : "memory");
 	return __ret;
@@ -35,6 +38,7 @@ static inline long __syscall2(long n, long a1, long a2)
 
 static inline long __syscall3(long n, long a1, long a2, long a3)
 {
+	if (n>350) return -ENOSYS;
 	unsigned long __ret;
 #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
 	__asm__ __volatile__ (SYSCALL_INSNS : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3) : "memory");
@@ -46,6 +50,7 @@ static inline long __syscall3(long n, long a1, long a2, long a3)
 
 static inline long __syscall4(long n, long a1, long a2, long a3, long a4)
 {
+	if (n>350) return -ENOSYS;
 	unsigned long __ret;
 #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
 	__asm__ __volatile__ (SYSCALL_INSNS : "=a"(__ret) : "a"(n), "b"(a1), "c"(a2), "d"(a3), "S"(a4) : "memory");
@@ -57,6 +62,7 @@ static inline long __syscall4(long n, long a1, long a2, long a3, long a4)
 
 static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a5)
 {
+	if (n>350) return -ENOSYS;
 	unsigned long __ret;
 #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
 	__asm__ __volatile__ (SYSCALL_INSNS
@@ -70,6 +76,7 @@ static inline long __syscall5(long n, long a1, long a2, long a3, long a4, long a
 
 static inline long __syscall6(long n, long a1, long a2, long a3, long a4, long a5, long a6)
 {
+	if (n>350) return -ENOSYS;
 	unsigned long __ret;
 #if !defined(__PIC__) || !defined(BROKEN_EBX_ASM)
 	__asm__ __volatile__ ("pushl %7 ; push %%ebp ; mov 4(%%esp),%%ebp ; " SYSCALL_INSNS " ; pop %%ebp ; add $4,%%esp"