diff --git a/dlls/d2d1/effect.c b/dlls/d2d1/effect.c
index 2f1949c073c..e7215c4b38a 100644
--- a/dlls/d2d1/effect.c
+++ b/dlls/d2d1/effect.c
@@ -26,6 +26,7 @@ static const struct d2d_effect_info builtin_effects[] =
     {&CLSID_D2D13DPerspectiveTransform, 1, 1, 1},
     {&CLSID_D2D1Composite,              2, 1, 0xffffffff},
     {&CLSID_D2D1Crop,                   1, 1, 1},
+    {&CLSID_D2D1Shadow,                 1, 1, 1},
 };
 
 static inline struct d2d_effect *impl_from_ID2D1Effect(ID2D1Effect *iface)
diff --git a/dlls/d2d1/tests/d2d1.c b/dlls/d2d1/tests/d2d1.c
index a425395e64a..3ade9634069 100644
--- a/dlls/d2d1/tests/d2d1.c
+++ b/dlls/d2d1/tests/d2d1.c
@@ -9908,6 +9908,7 @@ static void test_effect(BOOL d3d11)
         {&CLSID_D2D13DPerspectiveTransform,  1, 1, 1},
         {&CLSID_D2D1Composite,               2, 1, 0xffffffff},
         {&CLSID_D2D1Crop,                    1, 1, 1},
+        {&CLSID_D2D1Shadow,                  1, 1, 1},
     };
 
     if (!init_test_context(&ctx, d3d11))
diff --git a/include/d2d1effects.idl b/include/d2d1effects.idl
index 9bd0b7012ad..d448aec162a 100644
--- a/include/d2d1effects.idl
+++ b/include/d2d1effects.idl
@@ -20,6 +20,7 @@ cpp_quote("DEFINE_GUID(CLSID_D2D12DAffineTransform,      0x6aa97485,0x6354,0x4cf
 cpp_quote("DEFINE_GUID(CLSID_D2D13DPerspectiveTransform, 0xc2844d0b,0x3d86,0x46e7,0x85,0xba,0x52,0x6c,0x92,0x40,0xf3,0xfb);")
 cpp_quote("DEFINE_GUID(CLSID_D2D1Composite,              0x48fc9f51,0xf6ac,0x48f1,0x8b,0x58,0x3b,0x28,0xac,0x46,0xf7,0x6d);")
 cpp_quote("DEFINE_GUID(CLSID_D2D1Crop,                   0xe23f7110,0x0e9a,0x4324,0xaf,0x47,0x6a,0x2c,0x0c,0x46,0xf3,0x5b);")
+cpp_quote("DEFINE_GUID(CLSID_D2D1Shadow,                 0xc67ea361,0x1863,0x4e69,0x89,0xdb,0x69,0x5d,0x3e,0x9a,0x5b,0x6b);")
 
 typedef enum D2D1_BORDER_MODE
 {