diff --git a/src/d3d8/d3d8_d3d9_util.h b/src/d3d8/d3d8_d3d9_util.h
index 1143899e5..ce53699f2 100644
--- a/src/d3d8/d3d8_d3d9_util.h
+++ b/src/d3d8/d3d8_d3d9_util.h
@@ -107,7 +107,12 @@ namespace dxvk {
     params.AutoDepthStencilFormat = d3d9::D3DFORMAT(pParams->AutoDepthStencilFormat);
     params.Flags = pParams->Flags;
 
-    params.FullScreen_RefreshRateInHz = pParams->FullScreen_RefreshRateInHz;
+    // D3DPRESENT_RATE_UNLIMITED is unsupported, use D3DPRESENT_RATE_DEFAULT (or 0)
+    if (unlikely(pParams->FullScreen_RefreshRateInHz == D3DPRESENT_RATE_UNLIMITED)) {
+      params.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
+    } else {
+      params.FullScreen_RefreshRateInHz = pParams->FullScreen_RefreshRateInHz;
+    }
 
     // FullScreen_PresentationInterval -> PresentationInterval
     params.PresentationInterval = PresentationInterval;
diff --git a/src/d3d8/d3d8_include.h b/src/d3d8/d3d8_include.h
index 78d7dcd16..ec0360e18 100644
--- a/src/d3d8/d3d8_include.h
+++ b/src/d3d8/d3d8_include.h
@@ -191,6 +191,10 @@ namespace d3d9 {
 #define D3DDEVINFOID_VERTEXSTATS        6   // Aka D3DDEVINFOID_D3DVERTEXSTATS
 #endif
 
+#ifndef D3DPRESENT_RATE_UNLIMITED
+#define D3DPRESENT_RATE_UNLIMITED       0x7FFFFFFF
+#endif
+
 #else // _MSC_VER
 
 // These are enum typedefs in the MinGW headers, but not defined by Microsoft