diff --git a/dlls/wined3d/shader.c b/dlls/wined3d/shader.c
index 6282883ed04..a296e34bc9f 100644
--- a/dlls/wined3d/shader.c
+++ b/dlls/wined3d/shader.c
@@ -3736,7 +3736,7 @@ static struct wined3d_shader_signature_element *shader_find_signature_element(co
     for (i = 0; i < s->element_count; ++i)
     {
         if (e[i].stream_idx == stream_idx
-                && !_strnicmp(e[i].semantic_name, semantic_name, -1)
+                && !stricmp(e[i].semantic_name, semantic_name)
                 && e[i].semantic_idx == semantic_idx)
             return &e[i];
     }
diff --git a/dlls/wined3d/shader_sm4.c b/dlls/wined3d/shader_sm4.c
index 868d9b3cc64..266b54d1d15 100644
--- a/dlls/wined3d/shader_sm4.c
+++ b/dlls/wined3d/shader_sm4.c
@@ -1319,7 +1319,7 @@ static void *shader_sm4_init(const DWORD *byte_code, size_t byte_code_size,
         struct wined3d_shader_signature_element *e = &output_signature->elements[i];
 
         if (priv->shader_version.type == WINED3D_SHADER_TYPE_PIXEL
-                && _strnicmp(e->semantic_name, "SV_TARGET", -1))
+                && stricmp(e->semantic_name, "SV_TARGET"))
             continue;
         if (e->register_idx >= ARRAY_SIZE(priv->output_map))
         {
diff --git a/dlls/wined3d/wined3d_main.c b/dlls/wined3d/wined3d_main.c
index 4f50e8aeb7d..35973e210b0 100644
--- a/dlls/wined3d/wined3d_main.c
+++ b/dlls/wined3d/wined3d_main.c
@@ -329,17 +329,17 @@ static BOOL wined3d_dll_init(HINSTANCE hInstDLL)
         }
         if (!get_config_key(hkey, appkey, env, "shader_backend", buffer, size))
         {
-            if (!_strnicmp(buffer, "glsl", -1))
+            if (!stricmp(buffer, "glsl"))
             {
                 ERR_(winediag)("Using the GLSL shader backend.\n");
                 wined3d_settings.shader_backend = WINED3D_SHADER_BACKEND_GLSL;
             }
-            else if (!_strnicmp(buffer, "arb", -1))
+            else if (!stricmp(buffer, "arb"))
             {
                 ERR_(winediag)("Using the ARB shader backend.\n");
                 wined3d_settings.shader_backend = WINED3D_SHADER_BACKEND_ARB;
             }
-            else if (!_strnicmp(buffer, "none", -1))
+            else if (!stricmp(buffer, "none"))
             {
                 ERR_(winediag)("Disabling shader backends.\n");
                 wined3d_settings.shader_backend = WINED3D_SHADER_BACKEND_NONE;