diff --git a/dlls/d3d8/tests/stateblock.c b/dlls/d3d8/tests/stateblock.c
index e09ae6d9938..3ad9c1c140b 100644
--- a/dlls/d3d8/tests/stateblock.c
+++ b/dlls/d3d8/tests/stateblock.c
@@ -1270,7 +1270,7 @@ static void render_state_test_data_init(struct render_state_data *data)
     data->states[idx++] = TRUE;                  /* ALPHABLENDENABLE */
     data->states[idx++] = TRUE;                  /* FOGENABLE */
     data->states[idx++] = TRUE;                  /* SPECULARENABLE */
-    data->states[idx++] = 1 << 31;               /* FOGCOLOR */
+    data->states[idx++] = 1u << 31;              /* FOGCOLOR */
     data->states[idx++] = D3DFOG_EXP;            /* FOGTABLEMODE */
     data->states[idx++] = to_dword(0.1f);        /* FOGSTART */
     data->states[idx++] = to_dword(0.8f);        /* FOGEND */