diff --git a/src/win-d3d-fs.cc b/src/win-d3d-fs.cc
index 340cb9c..5ba60e4 100644
--- a/src/win-d3d-fs.cc
+++ b/src/win-d3d-fs.cc
@@ -391,7 +391,10 @@ static void d3d_fs_blit_memtoscreen(int x, int y, int y1, int y2, int w, int h)
                         hr = d3ddev->SetTexture(0, NULL);
 
                 if (hr == D3D_OK && readflash && vid_disc_indicator)
+                {
                         hr = d3ddev->DrawPrimitive(D3DPT_TRIANGLELIST, 6, 2);
+                        readflash = 0;
+                }
 
                 if (hr == D3D_OK)
                         hr = d3ddev->EndScene();
@@ -508,7 +511,10 @@ static void d3d_fs_blit_memtoscreen_8(int x, int y, int w, int h)
                         hr = d3ddev->SetTexture(0, NULL);
 
                 if (hr == D3D_OK && readflash && vid_disc_indicator)
+                {
                         hr = d3ddev->DrawPrimitive(D3DPT_TRIANGLELIST, 6, 2);
+                        readflash = 0;
+                }
 
                 if (hr == D3D_OK)
                         hr = d3ddev->EndScene();
diff --git a/src/win-d3d.cc b/src/win-d3d.cc
index dcaecb8..b795650 100644
--- a/src/win-d3d.cc
+++ b/src/win-d3d.cc
@@ -309,7 +309,10 @@ void d3d_blit_memtoscreen(int x, int y, int y1, int y2, int w, int h)
                         hr = d3ddev->SetTexture(0, NULL);
 
                 if (hr == D3D_OK && readflash && vid_disc_indicator)
+                {
                         hr = d3ddev->DrawPrimitive(D3DPT_TRIANGLELIST, 6, 2);
+                        readflash = 0;
+                }
 
                 if (hr == D3D_OK)
                         hr = d3ddev->EndScene();
@@ -409,7 +412,10 @@ void d3d_blit_memtoscreen_8(int x, int y, int w, int h)
                         hr = d3ddev->SetTexture(0, NULL);
 
                 if (hr == D3D_OK && readflash && vid_disc_indicator)
+                {
                         hr = d3ddev->DrawPrimitive(D3DPT_TRIANGLELIST, 6, 2);
+                        readflash = 0;
+                }
 
                 if (hr == D3D_OK)
                         hr = d3ddev->EndScene();