diff --git a/dlls/d3d9/device.c b/dlls/d3d9/device.c
index b0ef7240620..0c099e083c5 100644
--- a/dlls/d3d9/device.c
+++ b/dlls/d3d9/device.c
@@ -2852,7 +2852,8 @@ static HRESULT WINAPI d3d9_device_SetVertexShaderConstantI(IDirect3DDevice9Ex *i
     TRACE("iface %p, reg_idx %u, data %p, count %u.\n", iface, reg_idx, data, count);
 
     wined3d_mutex_lock();
-    hr = wined3d_device_set_vs_consts_i(device->wined3d_device, reg_idx, data, count);
+    hr = wined3d_device_set_vs_consts_i(device->wined3d_device,
+            reg_idx, count, (const struct wined3d_ivec4 *)data);
     wined3d_mutex_unlock();
 
     return hr;
diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index a61e1f56ba8..59a5c8cc3c4 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -2419,26 +2419,28 @@ HRESULT CDECL wined3d_device_get_vs_consts_b(const struct wined3d_device *device
 }
 
 HRESULT CDECL wined3d_device_set_vs_consts_i(struct wined3d_device *device,
-        UINT start_register, const int *constants, UINT vector4i_count)
+        unsigned int start_idx, unsigned int count, const struct wined3d_ivec4 *constants)
 {
-    UINT count = min(vector4i_count, WINED3D_MAX_CONSTS_I - start_register);
-    UINT i;
+    unsigned int i;
 
-    TRACE("device %p, start_register %u, constants %p, vector4i_count %u.\n",
-            device, start_register, constants, vector4i_count);
+    TRACE("device %p, start_idx %u, count %u, constants %p.\n",
+            device, start_idx, count, constants);
 
-    if (!constants || start_register >= WINED3D_MAX_CONSTS_I)
+    if (!constants || start_idx >= WINED3D_MAX_CONSTS_I)
         return WINED3DERR_INVALIDCALL;
 
-    memcpy(&device->update_state->vs_consts_i[start_register], constants, count * sizeof(int) * 4);
-    for (i = 0; i < count; ++i)
-        TRACE("Set INT constant %u to {%d, %d, %d, %d}.\n", start_register + i,
-                constants[i * 4], constants[i * 4 + 1],
-                constants[i * 4 + 2], constants[i * 4 + 3]);
+    if (count > WINED3D_MAX_CONSTS_I - start_idx)
+        count = WINED3D_MAX_CONSTS_I - start_idx;
+    memcpy(&device->update_state->vs_consts_i[start_idx], constants, count * sizeof(*constants));
+    if (TRACE_ON(d3d))
+    {
+        for (i = 0; i < count; ++i)
+            TRACE("Set ivec4 constant %u to %s.\n", start_idx + i, debug_ivec4(&constants[i]));
+    }
 
     if (device->recording)
     {
-        for (i = start_register; i < count + start_register; ++i)
+        for (i = start_idx; i < count + start_idx; ++i)
             device->recording->changed.vertexShaderConstantsI |= (1u << i);
     }
     else
diff --git a/dlls/wined3d/stateblock.c b/dlls/wined3d/stateblock.c
index 090faed0bb5..b6480341356 100644
--- a/dlls/wined3d/stateblock.c
+++ b/dlls/wined3d/stateblock.c
@@ -906,7 +906,7 @@ void CDECL wined3d_stateblock_apply(const struct wined3d_stateblock *stateblock)
     for (i = 0; i < stateblock->num_contained_vs_consts_i; ++i)
     {
         wined3d_device_set_vs_consts_i(device, stateblock->contained_vs_consts_i[i],
-                &stateblock->state.vs_consts_i[stateblock->contained_vs_consts_i[i]].x, 1);
+                1, &stateblock->state.vs_consts_i[stateblock->contained_vs_consts_i[i]]);
     }
     for (i = 0; i < stateblock->num_contained_vs_consts_b; ++i)
     {
diff --git a/dlls/wined3d/wined3d.spec b/dlls/wined3d/wined3d.spec
index 4eb24702e90..3831a650516 100644
--- a/dlls/wined3d/wined3d.spec
+++ b/dlls/wined3d/wined3d.spec
@@ -151,7 +151,7 @@
 @ cdecl wined3d_device_set_vs_cb(ptr long ptr)
 @ cdecl wined3d_device_set_vs_consts_b(ptr long ptr long)
 @ cdecl wined3d_device_set_vs_consts_f(ptr long long ptr)
-@ cdecl wined3d_device_set_vs_consts_i(ptr long ptr long)
+@ cdecl wined3d_device_set_vs_consts_i(ptr long long ptr)
 @ cdecl wined3d_device_set_vs_resource_view(ptr long ptr)
 @ cdecl wined3d_device_set_vs_sampler(ptr long ptr)
 @ cdecl wined3d_device_setup_fullscreen_window(ptr ptr long long)
diff --git a/include/wine/wined3d.h b/include/wine/wined3d.h
index af5cd3805d5..31aba7a76a2 100644
--- a/include/wine/wined3d.h
+++ b/include/wine/wined3d.h
@@ -2251,7 +2251,7 @@ HRESULT __cdecl wined3d_device_set_vs_consts_b(struct wined3d_device *device,
 HRESULT __cdecl wined3d_device_set_vs_consts_f(struct wined3d_device *device,
         unsigned int start_idx, unsigned int count, const struct wined3d_vec4 *constants);
 HRESULT __cdecl wined3d_device_set_vs_consts_i(struct wined3d_device *device,
-        UINT start_register, const int *constants, UINT vector4i_count);
+        unsigned int start_idx, unsigned int count, const struct wined3d_ivec4 *constants);
 void __cdecl wined3d_device_set_vs_resource_view(struct wined3d_device *device,
         UINT idx, struct wined3d_shader_resource_view *view);
 void __cdecl wined3d_device_set_vs_sampler(struct wined3d_device *device, UINT idx, struct wined3d_sampler *sampler);