diff --git a/contextionary/core/wordlist.go b/contextionary/core/wordlist.go
index 1e21e1f..48caa75 100644
--- a/contextionary/core/wordlist.go
+++ b/contextionary/core/wordlist.go
@@ -101,7 +101,7 @@ func (w *Wordlist) FindIndexByWord(_needle string) ItemIndex {
 	var bytes_needle = []byte(needle)
 
 	var low ItemIndex = 0
-	var high ItemIndex = ItemIndex(w.numberOfWords)
+	var high ItemIndex = ItemIndex(w.numberOfWords) - 1
 
 	for low <= high {
 		var midpoint ItemIndex = (low + high) / 2
diff --git a/tools/native_build_contextionary.sh b/tools/native_build_contextionary.sh
new file mode 100755
index 0000000..d637cab
--- /dev/null
+++ b/tools/native_build_contextionary.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+#Download contextionary
+LANGUAGE=en
+MODEL_VERSION=0.16.0
+./tools/download_contextionary.sh "$LANGUAGE" "$MODEL_VERSION"
+
+#Build the server
+VERSION=1.2.0
+CGO_ENABLED=1 go build -o ./contextionary-server -a -tags netgo -ldflags "-w -X main.Version=$VERSION" ./server
+
+#Generate contextionary
+tools/dev/gen_simple_contextionary.sh
+
+#Preprocess splitter dictionary
+/bin/bash ./tools/preprocess_splitter_dict.sh "$LANGUAGE" "./data/contextionary.idx"
+
+#Copy files to Alpine image
+cp ./contextionary-server $PWD
+
+#Set environment variables
+export KNN_FILE=./data/contextionary.knn
+export IDX_FILE=./data/contextionary.idx
+export STOPWORDS_FILE=./data/stopwords.json
+export COMPOUND_SPLITTING_DICTIONARY_FILE=./data/splitter_dict.csv
+
+#Run the server
+./contextionary-server