diff --git a/src/ext/GeometryUtil.js b/src/ext/GeometryUtil.js
index 5a95cfaf3..5efae3985 100755
--- a/src/ext/GeometryUtil.js
+++ b/src/ext/GeometryUtil.js
@@ -70,7 +70,7 @@
 
 			if (isMetric) {
 				units = ['ha', 'm'];
-				type = typeof isMetric;
+				var type = typeof isMetric;
 				if (type === 'string') {
 					units = [isMetric];
 				} else if (type !== 'boolean') {