diff --git a/arch/arm/src/armv7-a/crt0.c b/arch/arm/src/armv7-a/crt0.c
index 35fe970e0e..86a266986e 100644
--- a/arch/arm/src/armv7-a/crt0.c
+++ b/arch/arm/src/armv7-a/crt0.c
@@ -79,9 +79,10 @@ static void sig_trampoline(void)
     " blx  ip\n"         /* Call the signal handler */
     " pop  {r2}\n"       /* Recover LR in R2 */
     " mov  lr, r2\n"     /* Restore LR */
-    " mov  r0, #5\n"     /* SYS_signal_handler_return */
-    " svc %0\n"          /* Return from the SYSCALL */
-    ::"i"(SYS_syscall)
+    " mov  r0, %0\n"     /* SYS_signal_handler_return */
+    " svc %1\n"          /* Return from the SYSCALL */
+    ::"i"(SYS_signal_handler_return),
+      "i"(SYS_syscall)
   );
 }