diff --git a/source/ibo.c b/source/ibo.c
index fff4a18..593c5bd 100644
--- a/source/ibo.c
+++ b/source/ibo.c
@@ -36,7 +36,7 @@ void C3Di_IBOBind(C3D_IBO* ibo)
 
 	u32 pa = osConvertVirtToPhys((u32)ibo->data);
 	u32 offset = (pa - ctx->vboPos) &~ BIT(31);
-	GPUCMD_AddSingleParam(0x000F0227, offset | (ibo->format << 31));
+	GPUCMD_AddWrite(GPUREG_INDEXBUFFER_CONFIG, offset | (ibo->format << 31));
 }
 
 void C3D_IBODelete(C3D_IBO* ibo)
diff --git a/source/vbo.c b/source/vbo.c
index eb2b7d0..d2affa2 100644
--- a/source/vbo.c
+++ b/source/vbo.c
@@ -38,7 +38,7 @@ void C3D_VBOBind(C3D_VBO* vbo)
 		return;
 
 	ctx->vboPos = osConvertVirtToPhys((u32)vbo->data);
-	GPUCMD_AddSingleParam(0x000F0200, ctx->vboPos >> 3);
+	GPUCMD_AddWrite(GPUREG_ATTRIBBUFFERS_LOC, ctx->vboPos >> 3);
 }
 
 void C3D_VBODelete(C3D_VBO* vbo)