diff --git a/src/gfxstream/guest/platform/VirtGpu.cpp b/src/gfxstream/guest/platform/VirtGpu.cpp
index 6cb2c58665f..ac3fd8ee397 100644
--- a/src/gfxstream/guest/platform/VirtGpu.cpp
+++ b/src/gfxstream/guest/platform/VirtGpu.cpp
@@ -45,7 +45,3 @@ void VirtGpuDevice::resetInstance() {
         sDevice = nullptr;
     }
 }
-
-void VirtGpuDevice::setInstanceForTesting(VirtGpuDevice* device) {
-    sDevice = device;
-}
diff --git a/src/gfxstream/guest/platform/include/VirtGpu.h b/src/gfxstream/guest/platform/include/VirtGpu.h
index b9afbdf41c7..1ced8a51b21 100644
--- a/src/gfxstream/guest/platform/include/VirtGpu.h
+++ b/src/gfxstream/guest/platform/include/VirtGpu.h
@@ -180,8 +180,6 @@ class VirtGpuDevice {
     static VirtGpuDevice* getInstance(enum VirtGpuCapset capset = kCapsetNone);
     static void resetInstance();
 
-    static void setInstanceForTesting(VirtGpuDevice* device);
-
     VirtGpuDevice(enum VirtGpuCapset capset) : mCapset(capset) {}
     virtual ~VirtGpuDevice() {}