diff --git a/appveyor.yml b/appveyor.yml
index d5f76c344..a74d3c415 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,12 +4,9 @@ os: MinGW
 environment:
  CC: ccache
  CCACHE_CC: i686-w64-mingw32-gcc
- CCACHE_CC_64: x86_64-w64-mingw32-gcc
  WINDRES: windres
  # c:\mingw-w64 i686 has gcc 6.3.0, so use c:\msys64 7.3.0 instead
  MINGW_SDK: c:\msys64\mingw32
- # c:\msys64 x86_64 has gcc 8.2.0, so use c:\mingw-w64 7.3.0 instead
- MINGW_SDK_64: C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64
  CFLAGS: -Wall -W -Werror -Wno-error=implicit-fallthrough -Wimplicit-fallthrough=3 -Wno-tautological-compare -Wno-error=suggest-attribute=noreturn
  NASM_ZIP: nasm-2.12.01
  NASM_URL: http://www.nasm.us/pub/nasm/releasebuilds/2.12.01/win64/nasm-2.12.01-win64.zip
@@ -53,11 +50,6 @@ cache:
 - C:\Users\appveyor\srb2_cache
 
 install:
-- if [%CONFIGURATION%] == [SDL64] ( set "X86_64=1" )
-- if [%CONFIGURATION%] == [SDL64] ( set "CONFIGURATION=SDL" )
-- if [%X86_64%] == [1] ( set "MINGW_SDK=%MINGW_SDK_64%" )
-- if [%X86_64%] == [1] ( set "CCACHE_CC=%CCACHE_CC_64%" )
-
 - if not exist "%NASM_ZIP%.zip" appveyor DownloadFile "%NASM_URL%" -FileName "%NASM_ZIP%.zip"
 - 7z x -y "%NASM_ZIP%.zip" -o%TMP% >null
 - robocopy /S /xx /ns /nc /nfl /ndl /np /njh /njs "%TMP%\%NASM_ZIP%" "%MINGW_SDK%\bin" nasm.exe || exit 0
@@ -72,13 +64,12 @@ install:
 
 configuration:
 - SDL
-- SDL64
 
 before_build:
 - set "Path=%MINGW_SDK%\bin;%Path%"
-- if [%X86_64%] == [1] ( x86_64-w64-mingw32-gcc --version ) else ( i686-w64-mingw32-gcc --version )
+- i686-w64-mingw32-gcc --version
 - mingw32-make --version
-- if not [%X86_64%] == [1] ( nasm -v )
+- nasm -v
 - if not [%NOUPX%] == [1] ( upx -V )
 - ccache -V
 - ccache -s
@@ -91,7 +82,7 @@ before_build:
 - if not [%APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME%] == [] ( if not [%APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME%] == [%APPVEYOR_REPO_NAME%] (  for /f "delims=/" %%a in ("%APPVEYOR_PULL_REQUEST_HEAD_REPO_NAME%") do set "REPO=%%a-%APPVEYOR_PULL_REQUEST_HEAD_REPO_BRANCH%" ) )
 - set "EXENAME=EXENAME=srb2win-%REPO%-%GITSHORT%.exe"
 - set "SRB2_MFLAGS=-C src WARNINGMODE=1 CCACHE=1 NOOBJDUMP=1 %NOUPX% %EXENAME%"
-- if [%X86_64%] == [1] ( set "MINGW_FLAGS=MINGW64=1 X86_64=1 GCC81=1" ) else ( set "MINGW_FLAGS=MINGW=1 GCC91=1" )
+- set "MINGW_FLAGS=MINGW=1 GCC91=1"
 - set "SRB2_MFLAGS=%SRB2_MFLAGS% %MINGW_FLAGS% %CONFIGURATION%=1"
 
 build_script:
@@ -99,7 +90,6 @@ build_script:
 - cmd: mingw32-make.exe %SRB2_MFLAGS% ERRORMODE=1 -k
 
 after_build:
-- if [%X86_64%] == [1] ( set "CONFIGURATION=%CONFIGURATION%64" )
 - ccache -s
 - set BUILD_ARCHIVE=%REPO%-%GITSHORT%-%CONFIGURATION%.7z
 - set BUILDSARCHIVE=%REPO%-%CONFIGURATION%.7z
@@ -134,3 +124,4 @@ test: off
 on_finish:
 #- cmd: echo xfreerdp /u:appveyor /cert-ignore +clipboard /v:<ip>:<port>
 #- ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+# vim: et ts=1