diff --git a/.travis.yml b/.travis.yml
index 0f30bb0ae4..c8579e3f3e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,7 +41,7 @@ install:
   - export OMPI_CC="ccache $CC"
   - export OMPI_CXX="ccache $CXX"
   - test "$MACH" = "mpi" && export COMP="mpicxx -fopenmp" || export COMP="ccache $CXX"
-  - test "$CC" = "clang" && export CCACHE_CPP2=yes || :
+  - test "$CC" = "clang" && export CCACHE_CPP2=yes || true
 
 script:
   - ccache -z