diff --git a/appveyor.yml b/appveyor.yml
index 4878efe71..47b3c1ef3 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -63,7 +63,8 @@ clone_depth: 1                       # clone entire repository history if not de
 environment:
   global:
     #Qt: https://www.appveyor.com/docs/installed-software#qt
-    QTDIR: C:\Qt\5.4\mingw491_32
+    # (C:\Qt\5.10 mapped to C:\Qt\5.10.1 for backward compatibility)
+    QTDIR: C:\Qt\5.10\mingw53_32
     MSYS2_ARCH: i686
     TARGET: i686_32-pc-msys