diff --git a/Source/UnitTests/TestUtils/StubHost.cpp b/Source/UnitTests/TestUtils/StubHost.cpp
index e32561da90..1519af27a6 100644
--- a/Source/UnitTests/TestUtils/StubHost.cpp
+++ b/Source/UnitTests/TestUtils/StubHost.cpp
@@ -36,9 +36,6 @@ void Host_UpdateMainFrame()
 void Host_RequestRenderWindowSize(int, int)
 {
 }
-void Host_RequestFullscreen(bool)
-{
-}
 void Host_SetStartupDebuggingParameters()
 {
 }