diff --git a/CHANGES b/CHANGES
index d6339ab26..ab87e791b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,7 @@ Emulation fixes:
  - GBA Serialize: Fix serializing DMA transfer register
  - GBA Serialize: Fix audio DMA timing deserialization
  - GBA Video: Fix OAM not invalidating after reset (fixes mgba.io/i/1630)
+ - GBA Video: Fix backdrop blending on lines without sprites (fixes mgba.io/i/1647)
 Other fixes:
  - Qt: Only dynamically reset video scale if a game is running
  - Qt: Fix race condition with proxied video events
diff --git a/cinema/gba/blend/backdrop-blend/baseline_0000.png b/cinema/gba/blend/backdrop-blend/baseline_0000.png
new file mode 100644
index 000000000..577119a28
Binary files /dev/null and b/cinema/gba/blend/backdrop-blend/baseline_0000.png differ
diff --git a/cinema/gba/blend/backdrop-blend/baseline_0001.png b/cinema/gba/blend/backdrop-blend/baseline_0001.png
new file mode 100644
index 000000000..577119a28
Binary files /dev/null and b/cinema/gba/blend/backdrop-blend/baseline_0001.png differ
diff --git a/cinema/gba/blend/backdrop-blend/baseline_0002.png b/cinema/gba/blend/backdrop-blend/baseline_0002.png
new file mode 100644
index 000000000..1833c6baf
Binary files /dev/null and b/cinema/gba/blend/backdrop-blend/baseline_0002.png differ
diff --git a/cinema/gba/blend/backdrop-blend/baseline_0003.png b/cinema/gba/blend/backdrop-blend/baseline_0003.png
new file mode 100644
index 000000000..1833c6baf
Binary files /dev/null and b/cinema/gba/blend/backdrop-blend/baseline_0003.png differ
diff --git a/cinema/gba/blend/backdrop-blend/baseline_0004.png b/cinema/gba/blend/backdrop-blend/baseline_0004.png
new file mode 100644
index 000000000..f142054f1
Binary files /dev/null and b/cinema/gba/blend/backdrop-blend/baseline_0004.png differ
diff --git a/cinema/gba/blend/backdrop-blend/test.mvl b/cinema/gba/blend/backdrop-blend/test.mvl
new file mode 100644
index 000000000..7eef420c9
Binary files /dev/null and b/cinema/gba/blend/backdrop-blend/test.mvl differ
diff --git a/src/gba/renderers/video-software.c b/src/gba/renderers/video-software.c
index 666baa5e4..00a76cf28 100644
--- a/src/gba/renderers/video-software.c
+++ b/src/gba/renderers/video-software.c
@@ -623,7 +623,7 @@ static void GBAVideoSoftwareRendererDrawScanline(struct GBAVideoRenderer* render
 
 	_drawScanline(softwareRenderer, y);
 
-	if (softwareRenderer->forceTarget1 && softwareRenderer->target2Bd) {
+	if ((softwareRenderer->forceTarget1 || softwareRenderer->bg[0].target1 || softwareRenderer->bg[1].target1 || softwareRenderer->bg[2].target1 || softwareRenderer->bg[3].target1) && softwareRenderer->target2Bd) {
 		x = 0;
 		for (w = 0; w < softwareRenderer->nWindows; ++w) {
 			uint32_t backdrop = 0;