diff --git a/.appveyor.yml b/.appveyor.yml
index 69169e5..3eb775b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -18,12 +18,12 @@ install:
 
   - IF "%PLATFORM%" == "x86" (
       SET "MINGW_ARCHIVE=i686-8.1.0-release-posix-dwarf-rt_v6-rev0.7z" &
-      SET "MINGW_URL=https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/8.1.0/threads-posix/dwarf/i686-8.1.0-release-posix-dwarf-rt_v6-rev0.7z" &
+      SET "MINGW_URL=https://sourceforge.net/projects/mingw-w64/files/Toolchains%%20targetting%%20Win32/Personal%%20Builds/mingw-builds/8.1.0/threads-posix/dwarf/i686-8.1.0-release-posix-dwarf-rt_v6-rev0.7z" &
       SET "MINGW_DIR=mingw32"
     ) ELSE (
       IF "%PLATFORM%" == "x64" (
         SET "MINGW_ARCHIVE=x86_64-8.1.0-release-posix-seh-rt_v6-rev0.7z" &
-        SET "MINGW_URL=https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/8.1.0/threads-posix/seh/x86_64-8.1.0-release-posix-seh-rt_v6-rev0.7z" &
+        SET "MINGW_URL=https://sourceforge.net/projects/mingw-w64/files/Toolchains%%20targetting%%20Win64/Personal%%20Builds/mingw-builds/8.1.0/threads-posix/seh/x86_64-8.1.0-release-posix-seh-rt_v6-rev0.7z" &
         SET "MINGW_DIR=mingw64"
       ) else (
         echo "Unknown platform"