diff --git a/target-m68k/cpu.h b/target-m68k/cpu.h
index 7691452..cfeafc0 100644
--- a/target-m68k/cpu.h
+++ b/target-m68k/cpu.h
@@ -229,7 +229,7 @@
 #if defined(CONFIG_USER_ONLY)
 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 {
-    if (!newsp)
+    if (newsp)
         env->aregs[7] = newsp;
     env->dregs[0] = 0;
 }