diff --git a/CHANGES b/CHANGES
index 1285e13b6..9415d4864 100644
--- a/CHANGES
+++ b/CHANGES
@@ -20,6 +20,7 @@ Bugfixes:
  - DS Video: Properly deinitialize
  - DS GX: Mask off invalid bits of the palette base
  - DS: Properly close save file on close
+ - DS Video: Fix size of VRAM zeroes buffer
 Misc:
  - DS GX: Clean up and unify texture mapping
  - DS Core: Add symbol loading
diff --git a/include/mgba/internal/ds/gx.h b/include/mgba/internal/ds/gx.h
index 444131999..543795ab9 100644
--- a/include/mgba/internal/ds/gx.h
+++ b/include/mgba/internal/ds/gx.h
@@ -145,8 +145,8 @@ struct DSGXRenderer {
 	void (*getScanline)(struct DSGXRenderer* renderer, int y, const color_t** output);
 	void (*writeRegister)(struct DSGXRenderer* renderer, uint32_t address, uint16_t value);
 
-	uint16_t* tex[4];
-	uint16_t* texPal[6];
+	const uint16_t* tex[4];
+	const uint16_t* texPal[6];
 
 	uint16_t* toonTable;
 };
@@ -187,8 +187,8 @@ struct DSGX {
 	int pendingVertexIds[8];
 	bool reverseWinding;
 
-	uint16_t* tex[4];
-	uint16_t* texPal[6];
+	const uint16_t* tex[4];
+	const uint16_t* texPal[6];
 
 	int mtxMode;
 	int pvMatrixPointer;
diff --git a/include/mgba/internal/ds/gx/software.h b/include/mgba/internal/ds/gx/software.h
index 40fc29e31..9581e9997 100644
--- a/include/mgba/internal/ds/gx/software.h
+++ b/include/mgba/internal/ds/gx/software.h
@@ -20,8 +20,8 @@ struct DSGXSoftwarePolygon {
 	unsigned polyId;
 	DSGXPolygonAttrs polyParams;
 	DSGXTexParams texParams;
-	uint16_t* texBase;
-	uint16_t* palBase;
+	const uint16_t* texBase;
+	const uint16_t* palBase;
 	int texFormat;
 	int blendFormat;
 	int texW;
diff --git a/include/mgba/internal/ds/video.h b/include/mgba/internal/ds/video.h
index b3f042050..71ad231a3 100644
--- a/include/mgba/internal/ds/video.h
+++ b/include/mgba/internal/ds/video.h
@@ -104,13 +104,13 @@ struct DSVideoRenderer {
 
 	uint16_t* palette;
 	uint16_t* vram;
-	uint16_t* vramABG[32];
-	uint16_t* vramAOBJ[32];
-	uint16_t* vramABGExtPal[4];
+	const uint16_t* vramABG[32];
+	const uint16_t* vramAOBJ[32];
+	const uint16_t* vramABGExtPal[4];
 	uint16_t* vramAOBJExtPal;
-	uint16_t* vramBBG[32];
-	uint16_t* vramBOBJ[32];
-	uint16_t* vramBBGExtPal[4];
+	const uint16_t* vramBBG[32];
+	const uint16_t* vramBOBJ[32];
+	const uint16_t* vramBBGExtPal[4];
 	uint16_t* vramBOBJExtPal;
 
 	bool disableABG[4];
@@ -134,12 +134,12 @@ struct DSVideo {
 
 	uint16_t palette[1024];
 	uint16_t* vram;
-	uint16_t* vramABG[32];
-	uint16_t* vramAOBJ[32];
+	const uint16_t* vramABG[32];
+	const uint16_t* vramAOBJ[32];
 	uint16_t* vramABGExtPal[4];
 	uint16_t* vramAOBJExtPal;
-	uint16_t* vramBBG[32];
-	uint16_t* vramBOBJ[32];
+	const uint16_t* vramBBG[32];
+	const uint16_t* vramBOBJ[32];
 	uint16_t* vramBBGExtPal[4];
 	uint16_t* vramBOBJExtPal;
 	union DSOAM oam;
diff --git a/src/ds/video.c b/src/ds/video.c
index 1bdb0b4ab..437d89f1c 100644
--- a/src/ds/video.c
+++ b/src/ds/video.c
@@ -45,7 +45,7 @@ static const uint32_t _vramSize[9] = {
 	0x04000
 };
 
-static uint16_t _zeroes[0x2000] = {0};
+static const uint16_t _zeroes[0x10000] = {0};
 
 enum DSVRAMBankMode {
 	MODE_A_BG = 0,