diff --git a/src/defaultLocale.js b/src/defaultLocale.js
index 41ec802..9ecf0fa 100644
--- a/src/defaultLocale.js
+++ b/src/defaultLocale.js
@@ -8,7 +8,8 @@ defaultLocale({
   decimal: ".",
   thousands: ",",
   grouping: [3],
-  currency: ["$", ""]
+  currency: ["$", ""],
+  minus: "-"
 });
 
 export default function defaultLocale(definition) {
diff --git a/src/locale.js b/src/locale.js
index c6aa8c0..bed6c02 100644
--- a/src/locale.js
+++ b/src/locale.js
@@ -14,7 +14,8 @@ export default function(locale) {
       currency = locale.currency,
       decimal = locale.decimal,
       numerals = locale.numerals ? formatNumerals(locale.numerals) : identity,
-      percent = locale.percent || "%";
+      percent = locale.percent || "%",
+      minus = locale.minus || "-";
 
   function newFormat(specifier) {
     specifier = formatSpecifier(specifier);
@@ -80,7 +81,8 @@ export default function(locale) {
         if (valueNegative && +value === 0) valueNegative = false;
 
         // Compute the prefix and suffix.
-        valuePrefix = (valueNegative ? (sign === "(" ? sign : "-") : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
+        valuePrefix = (valueNegative ? (sign === "(" ? sign : minus) : sign === "-" || sign === "(" ? "" : sign) + valuePrefix;
+        
         valueSuffix = (type === "s" ? prefixes[8 + prefixExponent / 3] : "") + valueSuffix + (valueNegative && sign === "(" ? ")" : "");
 
         // Break the formatted value into the integer “value” part that can be