diff --git a/.travis.yml b/.travis.yml
index c689a0e..ec2e0dd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ os:
     - osx
 julia:
     - 0.6
-    - nightly
+    - 0.7
 notifications:
     email: false
 sudo: false
diff --git a/src/HighLevelInterface/HighLevelInterface.jl b/src/HighLevelInterface/HighLevelInterface.jl
index 696ae80..50c37b5 100644
--- a/src/HighLevelInterface/HighLevelInterface.jl
+++ b/src/HighLevelInterface/HighLevelInterface.jl
@@ -6,7 +6,7 @@ using Compat
 
 function warn_no_inf(T)
     if !(isinf(typemin(T)) && isinf(typemax(T)))
-        Base.warn_once("Element type $T does not have an infinite value. Note that this may artifically introduce ranged (two-sided) constraints. To avoid this, consider casting the problem data to Float64.")
+        @Compat.warn("Element type $T does not have an infinite value. Note that this may artifically introduce ranged (two-sided) constraints. To avoid this, consider casting the problem data to Float64.")
     end
 end