diff --git a/Source/Core/VideoCommon/RenderBase.cpp b/Source/Core/VideoCommon/RenderBase.cpp
index 98addff6b2..25730f98f4 100644
--- a/Source/Core/VideoCommon/RenderBase.cpp
+++ b/Source/Core/VideoCommon/RenderBase.cpp
@@ -146,7 +146,7 @@ bool Renderer::CalculateTargetSize()
   {
     // Set a scale based on the window size
     int width = EFB_WIDTH * m_target_rectangle.GetWidth() / m_last_xfb_width;
-    int height = EFB_HEIGHT * m_target_rectangle.GetWidth() / m_last_xfb_height;
+    int height = EFB_HEIGHT * m_target_rectangle.GetHeight() / m_last_xfb_height;
     m_efb_scale = std::max((width - 1) / EFB_WIDTH + 1, (height - 1) / EFB_HEIGHT + 1);
   }
   else