diff --git a/dlls/windowscodecs/jpegformat.c b/dlls/windowscodecs/jpegformat.c
index ef050ba6884..6617ec7b8ec 100644
--- a/dlls/windowscodecs/jpegformat.c
+++ b/dlls/windowscodecs/jpegformat.c
@@ -1440,7 +1440,15 @@ static HRESULT WINAPI JpegEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
 {
     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
     HRESULT hr;
-    PROPBAG2 opts[6] = {{0}};
+    static const PROPBAG2 opts[6] =
+    {
+        { PROPBAG2_TYPE_DATA, VT_R4,            0, 0, (LPOLESTR)wszImageQuality },
+        { PROPBAG2_TYPE_DATA, VT_UI1,           0, 0, (LPOLESTR)wszBitmapTransform },
+        { PROPBAG2_TYPE_DATA, VT_I4 | VT_ARRAY, 0, 0, (LPOLESTR)wszLuminance },
+        { PROPBAG2_TYPE_DATA, VT_I4 | VT_ARRAY, 0, 0, (LPOLESTR)wszChrominance },
+        { PROPBAG2_TYPE_DATA, VT_UI1,           0, 0, (LPOLESTR)wszJpegYCrCbSubsampling },
+        { PROPBAG2_TYPE_DATA, VT_BOOL,          0, 0, (LPOLESTR)wszSuppressApp0 },
+    };
 
     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
 
@@ -1458,26 +1466,7 @@ static HRESULT WINAPI JpegEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
         return WINCODEC_ERR_NOTINITIALIZED;
     }
 
-    opts[0].pstrName = (LPOLESTR)wszImageQuality;
-    opts[0].vt = VT_R4;
-    opts[0].dwType = PROPBAG2_TYPE_DATA;
-    opts[1].pstrName = (LPOLESTR)wszBitmapTransform;
-    opts[1].vt = VT_UI1;
-    opts[1].dwType = PROPBAG2_TYPE_DATA;
-    opts[2].pstrName = (LPOLESTR)wszLuminance;
-    opts[2].vt = VT_I4|VT_ARRAY;
-    opts[2].dwType = PROPBAG2_TYPE_DATA;
-    opts[3].pstrName = (LPOLESTR)wszChrominance;
-    opts[3].vt = VT_I4|VT_ARRAY;
-    opts[3].dwType = PROPBAG2_TYPE_DATA;
-    opts[4].pstrName = (LPOLESTR)wszJpegYCrCbSubsampling;
-    opts[4].vt = VT_UI1;
-    opts[4].dwType = PROPBAG2_TYPE_DATA;
-    opts[5].pstrName = (LPOLESTR)wszSuppressApp0;
-    opts[5].vt = VT_BOOL;
-    opts[5].dwType = PROPBAG2_TYPE_DATA;
-
-    hr = CreatePropertyBag2(opts, 6, ppIEncoderOptions);
+    hr = CreatePropertyBag2(opts, sizeof(opts)/sizeof(opts[0]), ppIEncoderOptions);
     if (FAILED(hr))
     {
         LeaveCriticalSection(&This->lock);
diff --git a/dlls/windowscodecs/pngformat.c b/dlls/windowscodecs/pngformat.c
index 1ab2c8573b0..117761c335a 100644
--- a/dlls/windowscodecs/pngformat.c
+++ b/dlls/windowscodecs/pngformat.c
@@ -2033,7 +2033,11 @@ static HRESULT WINAPI PngEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
 {
     PngEncoder *This = impl_from_IWICBitmapEncoder(iface);
     HRESULT hr;
-    PROPBAG2 opts[2]= {{0}};
+    static const PROPBAG2 opts[2] =
+    {
+        { PROPBAG2_TYPE_DATA, VT_BOOL, 0, 0, (LPOLESTR)wszPngInterlaceOption },
+        { PROPBAG2_TYPE_DATA, VT_UI1,  0, 0, (LPOLESTR)wszPngFilterOption },
+    };
 
     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
 
@@ -2051,13 +2055,6 @@ static HRESULT WINAPI PngEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
         return WINCODEC_ERR_NOTINITIALIZED;
     }
 
-    opts[0].pstrName = (LPOLESTR)wszPngInterlaceOption;
-    opts[0].vt = VT_BOOL;
-    opts[0].dwType = PROPBAG2_TYPE_DATA;
-    opts[1].pstrName = (LPOLESTR)wszPngFilterOption;
-    opts[1].vt = VT_UI1;
-    opts[1].dwType = PROPBAG2_TYPE_DATA;
-
     hr = CreatePropertyBag2(opts, sizeof(opts)/sizeof(opts[0]), ppIEncoderOptions);
     if (FAILED(hr))
     {
diff --git a/dlls/windowscodecs/propertybag.c b/dlls/windowscodecs/propertybag.c
index 2f3015ca6df..e9d1af9670d 100644
--- a/dlls/windowscodecs/propertybag.c
+++ b/dlls/windowscodecs/propertybag.c
@@ -213,7 +213,7 @@ static HRESULT WINAPI PropertyBag_CountProperties(IPropertyBag2 *iface, ULONG *p
     return S_OK;
 }
 
-static HRESULT copy_propbag2(PROPBAG2 *dest, PROPBAG2 *src)
+static HRESULT copy_propbag2(PROPBAG2 *dest, const PROPBAG2 *src)
 {
     dest->cfType = src->cfType;
     dest->clsid = src->clsid;
@@ -278,7 +278,7 @@ static const IPropertyBag2Vtbl PropertyBag_Vtbl = {
     PropertyBag_LoadObject
 };
 
-HRESULT CreatePropertyBag2(PROPBAG2 *options, UINT count,
+HRESULT CreatePropertyBag2(const PROPBAG2 *options, UINT count,
                            IPropertyBag2 **ppPropertyBag2)
 {
     UINT i;
diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
index a0eec53f5fe..f165e18934f 100644
--- a/dlls/windowscodecs/tiffformat.c
+++ b/dlls/windowscodecs/tiffformat.c
@@ -1936,7 +1936,11 @@ static HRESULT WINAPI TiffEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
 {
     TiffEncoder *This = impl_from_IWICBitmapEncoder(iface);
     TiffFrameEncode *result;
-
+    static const PROPBAG2 opts[2] =
+    {
+        { PROPBAG2_TYPE_DATA, VT_UI1, 0, 0, (LPOLESTR)wszTiffCompressionMethod },
+        { PROPBAG2_TYPE_DATA, VT_R4,  0, 0, (LPOLESTR)wszCompressionQuality },
+    };
     HRESULT hr=S_OK;
 
     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
@@ -1955,24 +1959,14 @@ static HRESULT WINAPI TiffEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
 
     if (SUCCEEDED(hr))
     {
-        PROPBAG2 opts[2]= {{0}};
-        opts[0].pstrName = (LPOLESTR)wszTiffCompressionMethod;
-        opts[0].vt = VT_UI1;
-        opts[0].dwType = PROPBAG2_TYPE_DATA;
-
-        opts[1].pstrName = (LPOLESTR)wszCompressionQuality;
-        opts[1].vt = VT_R4;
-        opts[1].dwType = PROPBAG2_TYPE_DATA;
-
-        hr = CreatePropertyBag2(opts, 2, ppIEncoderOptions);
-
+        hr = CreatePropertyBag2(opts, sizeof(opts)/sizeof(opts[0]), ppIEncoderOptions);
         if (SUCCEEDED(hr))
         {
             VARIANT v;
             VariantInit(&v);
             V_VT(&v) = VT_UI1;
             V_UNION(&v, bVal) = WICTiffCompressionDontCare;
-            hr = IPropertyBag2_Write(*ppIEncoderOptions, 1, opts, &v);
+            hr = IPropertyBag2_Write(*ppIEncoderOptions, 1, (PROPBAG2 *)opts, &v);
             VariantClear(&v);
             if (FAILED(hr))
             {
diff --git a/dlls/windowscodecs/wincodecs_private.h b/dlls/windowscodecs/wincodecs_private.h
index 2249c138430..8bba8112509 100644
--- a/dlls/windowscodecs/wincodecs_private.h
+++ b/dlls/windowscodecs/wincodecs_private.h
@@ -120,7 +120,7 @@ extern void reverse_bgr8(UINT bytesperpixel, LPBYTE bits, UINT width, UINT heigh
 
 extern HRESULT get_pixelformat_bpp(const GUID *pixelformat, UINT *bpp) DECLSPEC_HIDDEN;
 
-extern HRESULT CreatePropertyBag2(PROPBAG2 *options, UINT count,
+extern HRESULT CreatePropertyBag2(const PROPBAG2 *options, UINT count,
                                   IPropertyBag2 **property) DECLSPEC_HIDDEN;
 
 extern HRESULT CreateComponentInfo(REFCLSID clsid, IWICComponentInfo **ppIInfo) DECLSPEC_HIDDEN;