diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index f6a0b39cecd..667b90b51bb 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -3016,6 +3016,36 @@ unsigned int CDECL wined3d_device_get_max_frame_latency(const struct wined3d_dev
     return device->max_frame_latency;
 }
 
+static DWORD get_flexible_vertex_size(DWORD d3dvtVertexType)
+{
+    DWORD size = 0;
+    int i;
+    int numTextures = (d3dvtVertexType & WINED3DFVF_TEXCOUNT_MASK) >> WINED3DFVF_TEXCOUNT_SHIFT;
+
+    if (d3dvtVertexType & WINED3DFVF_NORMAL) size += 3 * sizeof(float);
+    if (d3dvtVertexType & WINED3DFVF_DIFFUSE) size += sizeof(DWORD);
+    if (d3dvtVertexType & WINED3DFVF_SPECULAR) size += sizeof(DWORD);
+    if (d3dvtVertexType & WINED3DFVF_PSIZE) size += sizeof(DWORD);
+    switch (d3dvtVertexType & WINED3DFVF_POSITION_MASK)
+    {
+        case WINED3DFVF_XYZ:    size += 3 * sizeof(float); break;
+        case WINED3DFVF_XYZRHW: size += 4 * sizeof(float); break;
+        case WINED3DFVF_XYZB1:  size += 4 * sizeof(float); break;
+        case WINED3DFVF_XYZB2:  size += 5 * sizeof(float); break;
+        case WINED3DFVF_XYZB3:  size += 6 * sizeof(float); break;
+        case WINED3DFVF_XYZB4:  size += 7 * sizeof(float); break;
+        case WINED3DFVF_XYZB5:  size += 8 * sizeof(float); break;
+        case WINED3DFVF_XYZW:   size += 4 * sizeof(float); break;
+        default: FIXME("Unexpected position mask %#x.\n", d3dvtVertexType & WINED3DFVF_POSITION_MASK);
+    }
+    for (i = 0; i < numTextures; i++)
+    {
+        size += GET_TEXCOORD_SIZE_FROM_FVF(d3dvtVertexType, i) * sizeof(float);
+    }
+
+    return size;
+}
+
 /* Context activation is done by the caller. */
 #define copy_and_next(dest, src, size) memcpy(dest, src, size); dest += (size)
 static HRESULT process_vertices_strided(const struct wined3d_device *device, DWORD dwDestIndex, DWORD dwCount,
diff --git a/dlls/wined3d/utils.c b/dlls/wined3d/utils.c
index b19f18fea45..db27270ba8a 100644
--- a/dlls/wined3d/utils.c
+++ b/dlls/wined3d/utils.c
@@ -5563,33 +5563,6 @@ void multiply_matrix(struct wined3d_matrix *dst, const struct wined3d_matrix *sr
     *dst = tmp;
 }
 
-DWORD get_flexible_vertex_size(DWORD d3dvtVertexType) {
-    DWORD size = 0;
-    int i;
-    int numTextures = (d3dvtVertexType & WINED3DFVF_TEXCOUNT_MASK) >> WINED3DFVF_TEXCOUNT_SHIFT;
-
-    if (d3dvtVertexType & WINED3DFVF_NORMAL) size += 3 * sizeof(float);
-    if (d3dvtVertexType & WINED3DFVF_DIFFUSE) size += sizeof(DWORD);
-    if (d3dvtVertexType & WINED3DFVF_SPECULAR) size += sizeof(DWORD);
-    if (d3dvtVertexType & WINED3DFVF_PSIZE) size += sizeof(DWORD);
-    switch (d3dvtVertexType & WINED3DFVF_POSITION_MASK) {
-        case WINED3DFVF_XYZ:    size += 3 * sizeof(float); break;
-        case WINED3DFVF_XYZRHW: size += 4 * sizeof(float); break;
-        case WINED3DFVF_XYZB1:  size += 4 * sizeof(float); break;
-        case WINED3DFVF_XYZB2:  size += 5 * sizeof(float); break;
-        case WINED3DFVF_XYZB3:  size += 6 * sizeof(float); break;
-        case WINED3DFVF_XYZB4:  size += 7 * sizeof(float); break;
-        case WINED3DFVF_XYZB5:  size += 8 * sizeof(float); break;
-        case WINED3DFVF_XYZW:   size += 4 * sizeof(float); break;
-        default: ERR("Unexpected position mask\n");
-    }
-    for (i = 0; i < numTextures; i++) {
-        size += GET_TEXCOORD_SIZE_FROM_FVF(d3dvtVertexType, i) * sizeof(float);
-    }
-
-    return size;
-}
-
 unsigned int wined3d_max_compat_varyings(const struct wined3d_gl_info *gl_info)
 {
     /* On core profile we have to also count diffuse and specular colors and the
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index aea874f84ea..19341a59b75 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1540,7 +1540,6 @@ void draw_primitive(struct wined3d_device *device, const struct wined3d_state *s
         const struct wined3d_draw_parameters *draw_parameters) DECLSPEC_HIDDEN;
 void dispatch_compute(struct wined3d_device *device, const struct wined3d_state *state,
         const struct wined3d_dispatch_parameters *dispatch_parameters) DECLSPEC_HIDDEN;
-DWORD get_flexible_vertex_size(DWORD d3dvtVertexType) DECLSPEC_HIDDEN;
 
 #define eps 1e-8f