diff --git a/include/PICA/regs.hpp b/include/PICA/regs.hpp
index 1f20e0aa..a1015046 100644
--- a/include/PICA/regs.hpp
+++ b/include/PICA/regs.hpp
@@ -20,6 +20,7 @@ namespace PICAInternalRegs {
 		BlendColour = 0x103,
 		AlphaTestConfig = 0x104,
 		DepthAndColorMask = 0x107,
+		DepthBufferFormat = 0x116,
 		ColourBufferFormat = 0x117,
 		DepthBufferLoc = 0x11C,
 		ColourBufferLoc = 0x11D,
diff --git a/src/core/PICA/regs.cpp b/src/core/PICA/regs.cpp
index c33af097..214ae4cb 100644
--- a/src/core/PICA/regs.cpp
+++ b/src/core/PICA/regs.cpp
@@ -77,6 +77,12 @@ void GPU::writeInternalReg(u32 index, u32 value, u32 mask) {
 			break;
 		}
 
+		case DepthBufferFormat: {
+			u32 fmt = value & 0x3;
+			renderer.setDepthFormat(fmt);
+			break;
+		}
+
 		case FramebufferSize: {
 			const u32 width = value & 0x7ff;
 			const u32 height = ((value >> 12) & 0x3ff) + 1;