diff --git a/Fraction.js b/Fraction.js
index c63fb4c..d7a8109 100644
--- a/Fraction.js
+++ b/Fraction.js
@@ -193,9 +193,14 @@ Fraction.decimalToFraction = function(x) {
 	var decLocation = x.indexOf('.');
 	if (decLocation != -1) {
 		var whole = x.substring(0, decLocation);
+		var isNegative = (whole.indexOf('-') != -1)? true: false;
 		var remainder = x.substring(decLocation + 1, x.length);
 		var nthPlace = Math.pow(10, remainder.length);
-		return Fraction.add(new Fraction(Number(whole), 1), new Fraction(Number(remainder), nthPlace))
+		if (isNegative) {
+			return Fraction.subtract(new Fraction(Number(whole), 1), new Fraction(Number(remainder), nthPlace))
+		} else {
+			return Fraction.add(new Fraction(Number(whole), 1), new Fraction(Number(remainder), nthPlace))
+		}
 	}
 	else { return new Fraction(Number(x)); }
 }
diff --git a/Tests.js b/Tests.js
index 79adb39..3819735 100644
--- a/Tests.js
+++ b/Tests.js
@@ -116,6 +116,7 @@ section("Helper Functions -- Advanced", function() {
 	        assert(Fraction.decimalToFraction(.25), new Fraction(1,4));
 	        assert(Fraction.decimalToFraction(1.7), new Fraction(17, 10));
 		assert(Fraction.decimalToFraction(8), new Fraction(8,1));
+		assert(Fraction.decimalToFraction(-.5), new Fraction(-1,2));
 	});
 });