diff --git a/.travis.yml b/.travis.yml
index 33705cc1f02..dca0c16be89 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,7 +39,7 @@ matrix:
     - env: IMAGE=asmjs
     - env: IMAGE=i686-gnu
     - env: IMAGE=i686-gnu-nopt
-    - env: IMAGE=wasm32
+    - env: IMAGE=wasm32 ALLOW_PR=1
     - env: IMAGE=x86_64-gnu
     - env: IMAGE=x86_64-gnu-full-bootstrap
     - env: IMAGE=x86_64-gnu-aux