diff --git a/common/predictive-text/build.sh b/common/predictive-text/build.sh
index d54a93dbf4..12c0d2b2b9 100755
--- a/common/predictive-text/build.sh
+++ b/common/predictive-text/build.sh
@@ -6,7 +6,7 @@
 
 # Fails the build if a specified file does not exist.
 assert ( ) {
-  if ! [ -f $1 ]; then
+  if ! [ -f "$1" ]; then
     fail "Build failed."
     exit 1
   fi
@@ -40,7 +40,7 @@ fail ( ) {
 # To get the inner source code, include the file generated by this function,
 # then use name.toString() where `name` is the name passed into this
 # function.
-wrap_worker_code() {
+wrap_worker_code ( ) {
   name="$1"
   js="$2"
   echo "// Autogenerated code. Do not modify!"