diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index a426ad6..a332cda 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -550,7 +550,7 @@
 
 status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& display,
         Vector<DisplayInfo>* configs) {
-    if (configs == NULL) {
+    if ((configs == NULL) || (display.get() == NULL)) {
         return BAD_VALUE;
     }