diff --git a/configure b/configure
index 547297bfb4..999b2ced23 100755
--- a/configure
+++ b/configure
@@ -4193,7 +4193,6 @@ case "$target_name" in
   ;;
   x86_64)
     TARGET_BASE_ARCH=i386
-    target_nptl="no"
   ;;
   alpha)
   ;;
diff --git a/linux-user/i386/target_cpu.h b/linux-user/i386/target_cpu.h
index 1170d84c41..58f86454d6 100644
--- a/linux-user/i386/target_cpu.h
+++ b/linux-user/i386/target_cpu.h
@@ -36,6 +36,13 @@ static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
     do_set_thread_area(env, newtls);
     cpu_x86_load_seg(env, R_GS, env->segs[R_GS].selector);
 }
+#else
+abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr);
+
+static inline void cpu_set_tls(CPUX86State *env, target_ulong newtls)
+{
+    do_arch_prctl(env, TARGET_ARCH_SET_FS, newtls);
+}
 #endif /* defined(TARGET_ABI32) */
 
 #endif /* !defined(TARGET_CPU_H) */
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 452b89df8d..d3b3590e8d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4189,7 +4189,7 @@ static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr)
 #endif /* TARGET_I386 && TARGET_ABI32 */
 
 #ifndef TARGET_ABI32
-static abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
+abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
 {
     abi_long ret = 0;
     abi_ulong val;