diff --git a/nightly/conf/nightly.conf b/nightly/conf/nightly.conf
index 5d2cb3c16..39a57559e 100644
--- a/nightly/conf/nightly.conf
+++ b/nightly/conf/nightly.conf
@@ -3,7 +3,7 @@
 ABT_DETAILS="x86_64"
 ABT_JOBS=5
 ABT_KERNELS="  \
-3.6
+3.6            \
 3.5.5          \
 3.4.12         \
 3.3.8-nc       \