diff --git a/cpus.c b/cpus.c
index e916137..7b9f8eb 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1213,3 +1213,16 @@
 exit:
     fclose(f);
 }
+
+void qmp_inject_nmi(Error **errp)
+{
+#if defined(TARGET_I386)
+    CPUState *env;
+
+    for (env = first_cpu; env != NULL; env = env->next_cpu) {
+        cpu_interrupt(env, CPU_INTERRUPT_NMI);
+    }
+#else
+    error_set(errp, QERR_UNSUPPORTED);
+#endif
+}
diff --git a/hmp-commands.hx b/hmp-commands.hx
index 9503751..b82aff8 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -736,8 +736,7 @@
         .args_type  = "",
         .params     = "",
         .help       = "inject an NMI on all guest's CPUs",
-        .user_print = monitor_user_noop,
-        .mhandler.cmd_new = do_inject_nmi,
+        .mhandler.cmd = hmp_inject_nmi,
     },
 #endif
 STEXI
diff --git a/hmp.c b/hmp.c
index d623526..0ebc398 100644
--- a/hmp.c
+++ b/hmp.c
@@ -593,3 +593,11 @@
         hmp_handle_error(mon, &errp);
     }
 }
+
+void hmp_inject_nmi(Monitor *mon, const QDict *qdict)
+{
+    Error *errp = NULL;
+
+    qmp_inject_nmi(&errp);
+    hmp_handle_error(mon, &errp);
+}
diff --git a/hmp.h b/hmp.h
index b034704..8a31f87 100644
--- a/hmp.h
+++ b/hmp.h
@@ -40,5 +40,6 @@
 void hmp_memsave(Monitor *mon, const QDict *qdict);
 void hmp_pmemsave(Monitor *mon, const QDict *qdict);
 void hmp_cont(Monitor *mon, const QDict *qdict);
+void hmp_inject_nmi(Monitor *mon, const QDict *qdict);
 
 #endif
diff --git a/monitor.c b/monitor.c
index b0d1862..62b1747 100644
--- a/monitor.c
+++ b/monitor.c
@@ -2204,25 +2204,6 @@
 }
 #endif
 
-#if defined(TARGET_I386)
-static int do_inject_nmi(Monitor *mon, const QDict *qdict, QObject **ret_data)
-{
-    CPUState *env;
-
-    for (env = first_cpu; env != NULL; env = env->next_cpu) {
-        cpu_interrupt(env, CPU_INTERRUPT_NMI);
-    }
-
-    return 0;
-}
-#else
-static int do_inject_nmi(Monitor *mon, const QDict *qdict, QObject **ret_data)
-{
-    qerror_report(QERR_UNSUPPORTED);
-    return -1;
-}
-#endif
-
 static qemu_acl *find_acl(Monitor *mon, const char *name)
 {
     qemu_acl *acl = qemu_acl_find(name);
diff --git a/qapi-schema.json b/qapi-schema.json
index b6fd3f1..fea513f 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -966,3 +966,16 @@
 ##
 { 'command': 'cont' }
 
+##
+# @inject-nmi:
+#
+# Injects an Non-Maskable Interrupt into all guest's VCPUs.
+#
+# Returns:  If successful, nothing
+#           If the Virtual Machine doesn't support NMI injection, Unsupported
+#
+# Since:  0.14.0
+#
+# Notes: Only x86 Virtual Machines support this command.
+##
+{ 'command': 'inject-nmi' }
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 03b2617..2e76708 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -407,10 +407,7 @@
     {
         .name       = "inject-nmi",
         .args_type  = "",
-        .params     = "",
-        .help       = "",
-        .user_print = monitor_user_noop,
-        .mhandler.cmd_new = do_inject_nmi,
+        .mhandler.cmd_new = qmp_marshal_input_inject_nmi,
     },
 
 SQMP