diff --git a/scripts/build b/scripts/build
index 68717441..011fc05b 100755
--- a/scripts/build
+++ b/scripts/build
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -euo pipefail
 
 echo "Building..."
 
diff --git a/src/Data/EuclideanRing.lua b/src/Data/EuclideanRing.lua
index e419766f..157ca921 100644
--- a/src/Data/EuclideanRing.lua
+++ b/src/Data/EuclideanRing.lua
@@ -1,5 +1,6 @@
+-- math.maxinteger is Lua 5.3+; PureScript Int is 32-bit, hence the
+-- literal bound in intDegree.
 return {
-  -- math.maxinteger is Lua 5.3+; PureScript Int is 32-bit
   intDegree = (function(x) return math.min(math.abs(x), 2147483647) end),
   intDiv = (function(x)
     return function(y)