diff --git a/appveyor.yml b/appveyor.yml
index 3ecf70d..7336195 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -35,13 +35,11 @@ environment:
       ADDRESS_MODEL: 64
       CXXSTD: 11
       ADDPATH: C:\cygwin64\bin
-      EXTRA_TESTS: 1
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
     - TOOLSET: gcc
       ADDRESS_MODEL: 64
       CXXSTD: 11,14,17
       ADDPATH: C:\mingw-w64\x86_64-7.3.0-posix-seh-rt_v5-rev0\mingw64\bin
-      EXTRA_TESTS: 1
       APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
     - TOOLSET: gcc
       ADDRESS_MODEL: 64