diff --git a/dlls/gdiplus/image.c b/dlls/gdiplus/image.c
index 277c86c410e..e44315a9346 100644
--- a/dlls/gdiplus/image.c
+++ b/dlls/gdiplus/image.c
@@ -28,6 +28,7 @@
 #include "olectl.h"
 #include "ole2.h"
 
+#include "initguid.h"
 #include "gdiplus.h"
 #include "gdiplus_private.h"
 #include "wine/debug.h"
@@ -785,9 +786,18 @@ GpStatus WINGDIPAPI GdipGetImageRawFormat(GpImage *image, GUID *format)
         return InvalidParameter;
 
     if(!(calls++))
-        FIXME("not implemented\n");
+        FIXME("stub\n");
 
-    return NotImplemented;
+    /* FIXME: should be detected from embedded picture or stored separately */
+    switch (image->type)
+    {
+    case ImageTypeBitmap:   *format = ImageFormatBMP; break;
+    case ImageTypeMetafile: *format = ImageFormatEMF; break;
+    default:
+        WARN("unknown type %u\n", image->type);
+        *format = ImageFormatUndefined;
+    }
+    return Ok;
 }
 
 GpStatus WINGDIPAPI GdipGetImageType(GpImage *image, ImageType *type)
diff --git a/include/gdiplusimaging.h b/include/gdiplusimaging.h
index 791d9cde306..e8dda736e8c 100644
--- a/include/gdiplusimaging.h
+++ b/include/gdiplusimaging.h
@@ -19,6 +19,18 @@
 #ifndef _GDIPLUSIMAGING_H
 #define _GDIPLUSIMAGING_H
 
+DEFINE_GUID(ImageFormatUndefined, 0xb96b3ca9, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatMemoryBMP, 0xb96b3caa, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatBMP,       0xb96b3cab, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatEMF,       0xb96b3cac, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatWMF,       0xb96b3cad, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatJPEG,      0xb96b3cae, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatPNG,       0xb96b3caf, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatGIF,       0xb96b3cb0, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatTIFF,      0xb96b3cb1, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatEXIF,      0xb96b3cb2, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+DEFINE_GUID(ImageFormatIcon,      0xb96b3cb5, 0x728, 0x11d3, 0x9d, 0x7b, 0, 0, 0xf8, 0x1e, 0xf3, 0x2e);
+
 enum ImageLockMode
 {
     ImageLockModeRead           = 1,