diff --git a/cmdline/mingwapp.c b/cmdline/mingwapp.c
index 55ee4369..2d6435b7 100644
--- a/cmdline/mingwapp.c
+++ b/cmdline/mingwapp.c
@@ -1584,7 +1584,7 @@ static void* thread_spinup(void* arg)
 
 	/* skip not rotational devices */
 	if (devpower(devinfo->device, devinfo->name, devinfo->wfile) == 0)
-		return (void*)-1;
+		return 0;
 
 	start = os_tick_ms();
 
@@ -1624,7 +1624,7 @@ static void* thread_spindown(void* arg)
 
 	/* skip not rotational devices */
 	if (devpower(devinfo->device, devinfo->name, devinfo->wfile) == 0)
-		return (void*)-1;
+		return 0;
 
 	start = os_tick_ms();
 
@@ -1648,6 +1648,10 @@ static void* thread_spindownifup(void* arg)
 	uint64_t start;
 	int power;
 
+	/* skip not rotational devices */
+	if (devpower(devinfo->device, devinfo->name, devinfo->wfile) == 0)
+		return 0;
+
 	start = os_tick_ms();
 
 	if (devdownifup(devinfo->device, devinfo->name, devinfo->smartctl, devinfo->smartctl_info, &power) != 0) {
diff --git a/cmdline/unixapp.c b/cmdline/unixapp.c
index 7b329f19..86277183 100644
--- a/cmdline/unixapp.c
+++ b/cmdline/unixapp.c
@@ -3475,7 +3475,7 @@ static void* thread_spinup(void* arg)
 
 	/* skip not rotational devices */
 	if (devpower(devinfo->device) == 0)
-		return (void*)-1;
+		return 0;
 
 	start = os_tick_ms();
 
@@ -3520,7 +3520,7 @@ static void* thread_spindown(void* arg)
 
 	/* skip not rotational devices */
 	if (devpower(devinfo->device) == 0)
-		return (void*)-1;
+		return 0;
 
 	start = os_tick_ms();
 
@@ -3549,6 +3549,10 @@ static void* thread_spindownifup(void* arg)
 	uint64_t start;
 	int power;
 
+	/* skip not rotational devices */
+	if (devpower(devinfo->device) == 0)
+		return 0;
+
 	start = os_tick_ms();
 
 	if (devdownifup(devinfo->device, devinfo->name, devinfo->smartctl, devinfo->smartctl_info, &power) != 0) {