diff --git a/.travis.yml b/.travis.yml
index 0618f26e..3d73f75e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,9 @@ matrix:
     - os: linux
       compiler: gcc
       env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Release OPJ_CI_INCLUDE_IF_DEPLOY=1
+    - os: linux
+      compiler: gcc
+      env: OPJ_CI_ARCH=x86_64 OPJ_CI_BUILD_CONFIGURATION=Release OPJ_NUM_THREADS=2
     - os: linux
       compiler: gcc
       env: OPJ_CI_ARCH=i386 OPJ_CI_BUILD_CONFIGURATION=Release