diff --git a/.travis/install.arrayfire b/.travis/install.arrayfire
index 97e31675d7d69a1cd0dbbd9692be15a35c0fac6f..7b8c1ff6e31ef7ac08f954e53bc97f5c2ad57e93 100755
--- a/.travis/install.arrayfire
+++ b/.travis/install.arrayfire
@@ -6,8 +6,8 @@ set -x
 cd "$(mktemp -dt plumed.XXXXXX)"
 
 wget http://arrayfire.s3.amazonaws.com/3.6.1/ArrayFire-v3.6.1_Linux_x86_64.sh
-
-./Arrayfire_*_Linux_x86_64.sh --include-subdir --prefix=/opt
+chmod +x ArrayFire-v3.6.1_Linux_x86_64.sh
+./ArrayFire-v3.6.1_Linux_x86_64.sh --include-subdir --prefix=/opt
 
 echo /opt/arrayfire/lib > /etc/ld.so.conf.d/arrayfire.conf
-ldconfig
+sudo ldconfig