diff --git a/isidore.sh b/isidore.sh
index 67aeb35..71fa9eb 100755
--- a/isidore.sh
+++ b/isidore.sh
@@ -128,9 +128,9 @@ function new_project()
 {
 	echo "$PROJECT_NAME v$ISIDORE_VERSION"
 
-	NEW_PROJECT_DIR=$1
-	NEW_PROJECT_NAME="New Project"
-	NEW_PROJECT_URL="http://example.com/"
+	local NEW_PROJECT_DIR=$1
+	local NEW_PROJECT_NAME="New Project"
+	local NEW_PROJECT_URL="http://example.com/"
 	if [ $2 == 1 ]
 	then
 		echo -n "Project name: "
@@ -177,7 +177,7 @@ function build_project()
 {
 	check_in_project
 
-	CFG_HEADER_FILE="$TMP_DIR/config-header.php"
+	local CFG_HEADER_FILE="$TMP_DIR/config-header.php"
 
 	mkdir -p $OUTPUT_DIR
 	mkdir -p $TMP_DIR
@@ -193,7 +193,7 @@ function build_project()
 	do
 		cat $CFG_HEADER_FILE $i > $TMP_DIR/$i
 		: ${i:${#SOURCE_DIR}}
-		OUT_FILE="$OUTPUT_DIR/${_: :-4}"
+		local OUT_FILE="$OUTPUT_DIR/${_: :-4}"
 		if [ $1 == 1 ]
 		then
 			echo "Building $OUT_FILE ..."
@@ -203,7 +203,7 @@ function build_project()
 
 	for i in $(find $SOURCE_DIR -type f -not -name '*.php')
 	do
-		OUT_FILE="$OUTPUT_DIR/${i:${#SOURCE_DIR}}"
+		local OUT_FILE="$OUTPUT_DIR/${i:${#SOURCE_DIR}}"
 		if [ $1 == 1 ]
 		then
 			echo "Copying $OUT_FILE ..."