diff --git a/appveyor/test_task.bat b/appveyor/test_task.bat
index 12aff530313d9..bb853f5251b71 100644
--- a/appveyor/test_task.bat
+++ b/appveyor/test_task.bat
@@ -90,8 +90,10 @@ mkdir c:\tests_tmp
 
 set TEST_PHP_JUNIT=c:\junit.out.xml
 
+set SKIP_SLOW_TESTS=1
+
 cd "%APPVEYOR_BUILD_FOLDER%"
-nmake test TESTS="%OPCACHE_OPTS% -q --offline --show-diff --show-slow 1000 --set-timeout 120 -g FAIL,XFAIL,BORK,WARN,LEAK,SKIP --temp-source c:\tests_tmp --temp-target c:\tests_tmp"
+nmake test TESTS="%OPCACHE_OPTS% -q --offline --show-diff --show-slow 0 --set-timeout 120 -g FAIL,XFAIL,BORK,WARN,LEAK,SKIP --temp-source c:\tests_tmp --temp-target c:\tests_tmp"
 
 set EXIT_CODE=%errorlevel%