diff --git a/.travis.yml b/.travis.yml
index 56d7ee9..a25c71a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,6 +15,7 @@ addons:
 env:
   matrix:
     - ARCH="riscv32"
+    - ARCH="riscv32" OPTS="m_mode=1"
     - ARCH="x86_64"
     - ARCH="aarch64"
 
@@ -38,5 +39,5 @@ before_script:
   - (test -x $HOME/.cargo/bin/bootimage || cargo install bootimage)
 
 script:
-  - cd kernel && make build arch=$ARCH && cd ..
+  - cd kernel && make build arch=$ARCH $OPTS && cd ..
   - cd user && make arch=$ARCH