diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 0339f0545..793cd5e2a 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,4 +1,9 @@
 January 18, 2007
+- Added D3DCREATE_FPU_PRESERVE to the IDirect3D9::CreateDevice() call.
+  Normally Direct3D sets the FPU to single precision. We don't want that,
+  since it can mean going out of sync with machines that are using the
+  standard precision. Additionally, the nodebuilder requires the extra
+  precision that single precision lacks.
 - Replaced the vector math routines with the ones I developed for the FP code.
 
 January 15, 2007
diff --git a/src/win32/fb_d3d9.cpp b/src/win32/fb_d3d9.cpp
index 4f0070fbb..a49a36f7e 100644
--- a/src/win32/fb_d3d9.cpp
+++ b/src/win32/fb_d3d9.cpp
@@ -235,7 +235,7 @@ D3DFB::D3DFB (int width, int height, bool fullscreen)
 	HRESULT hr;
 
 	if (FAILED(hr = D3D->CreateDevice (D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, Window,
-		D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &D3DDevice)))
+		D3DCREATE_SOFTWARE_VERTEXPROCESSING | D3DCREATE_FPU_PRESERVE, &d3dpp, &D3DDevice)))
 	{
 		D3DDevice = NULL;
 		if (fullscreen)