diff --git a/appveyor.yml b/appveyor.yml
index 3fbae82..8af441d 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -136,7 +136,7 @@ build: false
 #directly or perform other testing commands. Rust will automatically be placed in the PATH
 # environment variable.
 test_script:
-  - rustup default %channel%-%target%
+  - set CRATE_CC_NO_DEFAULTS=1
   - cargo build %cargoflags%
 
 before_deploy: