diff --git a/configure b/configure
index 605bf3fa21c54ae68c21cf836cc491b80e7cb934..7b0f615b97b14cec315a5c605269141f18c44795 100755
--- a/configure
+++ b/configure
@@ -1462,8 +1462,8 @@ case $target_os in
         check_cpp_condition _mingw.h "(__MINGW32_MAJOR_VERSION > 3) || (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
             die "ERROR: MinGW runtime version must be >= 3.15."
         enabled_any avisynth vfwcap_demuxer &&
-            { check_cpp_condition w32api.h "(__W32API_MAJOR_VERSION > 3) || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION >= 12)" ||
-              die "ERROR: avisynth and vfwcap_demuxer require w32api version 3.12 or later."; }
+            { check_cpp_condition w32api.h "(__W32API_MAJOR_VERSION > 3) || (__W32API_MAJOR_VERSION == 3 && __W32API_MINOR_VERSION >= 13)" ||
+              die "ERROR: avisynth and vfwcap_demuxer require w32api version 3.13 or later."; }
         ;;
     cygwin*)
         target_os=cygwin
diff --git a/libavdevice/vfwcap.c b/libavdevice/vfwcap.c
index 078c18668c4311909eb0be975d6c5069c3a9c817..83e499c9dab258bb56126a7c654b2a57612ae33e 100644
--- a/libavdevice/vfwcap.c
+++ b/libavdevice/vfwcap.c
@@ -27,18 +27,6 @@
 
 /* Defines for VFW missing from MinGW.
  * Remove this when MinGW incorporates them. */
-#define WM_CAP_START                (0x0400)
-#define WM_CAP_SET_CALLBACK_VIDEOSTREAM (WM_CAP_START + 6)
-#define WM_CAP_DRIVER_CONNECT       (WM_CAP_START + 10)
-#define WM_CAP_DRIVER_DISCONNECT    (WM_CAP_START + 11)
-#define WM_CAP_GET_VIDEOFORMAT      (WM_CAP_START + 44)
-#define WM_CAP_SET_VIDEOFORMAT      (WM_CAP_START + 45)
-#define WM_CAP_SET_PREVIEW          (WM_CAP_START + 50)
-#define WM_CAP_SET_OVERLAY          (WM_CAP_START + 51)
-#define WM_CAP_SEQUENCE_NOFILE      (WM_CAP_START + 63)
-#define WM_CAP_SET_SEQUENCE_SETUP   (WM_CAP_START + 64)
-#define WM_CAP_GET_SEQUENCE_SETUP   (WM_CAP_START + 65)
-
 #define HWND_MESSAGE                ((HWND)-3)
 
 #define BI_RGB                      0