diff --git a/Source/Core/VideoCommon/RenderBase.cpp b/Source/Core/VideoCommon/RenderBase.cpp
index dea1cca349..706e0ac58c 100644
--- a/Source/Core/VideoCommon/RenderBase.cpp
+++ b/Source/Core/VideoCommon/RenderBase.cpp
@@ -68,11 +68,6 @@ Renderer::Renderer()
 
 Renderer::~Renderer() = default;
 
-bool Renderer::EFBHasAlphaChannel() const
-{
-  return m_prev_efb_format == PixelFormat::RGBA6_Z24;
-}
-
 void Renderer::ClearScreen(const MathUtil::Rectangle<int>& rc, bool color_enable, bool alpha_enable,
                            bool z_enable, u32 color, u32 z)
 {
diff --git a/Source/Core/VideoCommon/RenderBase.h b/Source/Core/VideoCommon/RenderBase.h
index 054516ae01..ea38b71b98 100644
--- a/Source/Core/VideoCommon/RenderBase.h
+++ b/Source/Core/VideoCommon/RenderBase.h
@@ -100,7 +100,6 @@ public:
 
   PixelFormat GetPrevPixelFormat() const { return m_prev_efb_format; }
   void StorePixelFormat(PixelFormat new_format) { m_prev_efb_format = new_format; }
-  bool EFBHasAlphaChannel() const;
 
   bool UseVertexDepthRange() const;
   void DoState(PointerWrap& p);