diff --git a/src/add-ons/kernel/drivers/network/wlan/ralinkwifi/glue.c b/src/add-ons/kernel/drivers/network/wlan/ralinkwifi/glue.c
index 981bca680a..2ab6b0dd87 100644
--- a/src/add-ons/kernel/drivers/network/wlan/ralinkwifi/glue.c
+++ b/src/add-ons/kernel/drivers/network/wlan/ralinkwifi/glue.c
@@ -69,11 +69,11 @@ __haiku_handle_fbsd_drivers_list(status_t (*handler)(driver_t *[], driver_t *[])
 int
 HAIKU_CHECK_DISABLE_INTERRUPTS(device_t dev)
 {
-	struct rt2560_softc* sc = (struct rt2560_softc*)device_get_softc(dev);
-		// sc_ifp is common between context data structures
-
 	switch (pci_get_device(dev)) {
 		case 0x0201:
+		{
+			struct rt2560_softc* sc = (struct rt2560_softc*)device_get_softc(dev);
+
 			// disable interrupts
 			RAL_WRITE(sc, RT2560_CSR8, 0xffffffff);
 
@@ -82,9 +82,13 @@ HAIKU_CHECK_DISABLE_INTERRUPTS(device_t dev)
 				return 0;
 			}
 			break;
+		}
 		case 0x0301:
 		case 0x0302:
 		case 0x0401:
+		{
+			struct rt2661_softc* sc = (struct rt2661_softc*)device_get_softc(dev);
+
 			// disable MAC and MCU interrupts
 			RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0xffffff7f);
 			RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0xffffffff);
@@ -94,12 +98,12 @@ HAIKU_CHECK_DISABLE_INTERRUPTS(device_t dev)
 				return 0;
 			}
 			break;
+		}
 		default:
 		{
-			uint32 r;
 			struct rt2860_softc* sc =
 				(struct rt2860_softc*)device_get_softc(dev);
-			r = RAL_READ(sc, RT2860_INT_STATUS);
+			uint32 r = RAL_READ(sc, RT2860_INT_STATUS);
 			if (r == 0 || r == 0xffffffff)
 				return 0;