diff --git a/src/Humanizer.Tests/TimeSpanHumanizeTests.cs b/src/Humanizer.Tests/TimeSpanHumanizeTests.cs
index ef686dad8..a49ae4633 100644
--- a/src/Humanizer.Tests/TimeSpanHumanizeTests.cs
+++ b/src/Humanizer.Tests/TimeSpanHumanizeTests.cs
@@ -13,6 +13,8 @@ public TimeSpanHumanizeTests() : base("en-US") { }
         [Theory]
         [InlineData(14, "2 weeks")]
         [InlineData(7, "1 week")]
+        [InlineData(-14, "2 weeks")]
+        [InlineData(-7, "1 week")]
         public void Weeks(int days, string expected)
         {
             var actual = TimeSpan.FromDays(days).Humanize();
@@ -23,6 +25,9 @@ public void Weeks(int days, string expected)
         [InlineData(6, "6 days")]
         [InlineData(2, "2 days")]
         [InlineData(1, "1 day")]
+        [InlineData(-6, "6 days")]
+        [InlineData(-2, "2 days")]
+        [InlineData(-1, "1 day")]
         public void Days(int days, string expected)
         {
             var actual = TimeSpan.FromDays(days).Humanize();
@@ -32,6 +37,8 @@ public void Days(int days, string expected)
         [Theory]
         [InlineData(2, "2 hours")]
         [InlineData(1, "1 hour")]
+        [InlineData(-2, "2 hours")]
+        [InlineData(-1, "1 hour")]
         public void Hours(int hours, string expected)
         {
             var actual = TimeSpan.FromHours(hours).Humanize();
@@ -41,6 +48,8 @@ public void Hours(int hours, string expected)
         [Theory]
         [InlineData(2, "2 minutes")]
         [InlineData(1, "1 minute")]
+        [InlineData(-2, "2 minutes")]
+        [InlineData(-1, "1 minute")]
         public void Minutes(int minutes, string expected)
         {
             var actual = TimeSpan.FromMinutes(minutes).Humanize();
@@ -52,6 +61,10 @@ public void Minutes(int minutes, string expected)
         [InlineData(60, "1 minute")]
         [InlineData(2, "2 seconds")]
         [InlineData(1, "1 second")]
+        [InlineData(-135, "2 minutes")]
+        [InlineData(-60, "1 minute")]
+        [InlineData(-2, "2 seconds")]
+        [InlineData(-1, "1 second")]
         public void Seconds(int seconds, string expected)
         {
             var actual = TimeSpan.FromSeconds(seconds).Humanize();
@@ -63,6 +76,10 @@ public void Seconds(int seconds, string expected)
         [InlineData(1400, "1 second")]
         [InlineData(2, "2 milliseconds")]
         [InlineData(1, "1 millisecond")]
+        [InlineData(-2500, "2 seconds")]
+        [InlineData(-1400, "1 second")]
+        [InlineData(-2, "2 milliseconds")]
+        [InlineData(-1, "1 millisecond")]
         public void Milliseconds(int ms, string expected)
         {
             var actual = TimeSpan.FromMilliseconds(ms).Humanize();
diff --git a/src/Humanizer/TimeSpanHumanizeExtensions.cs b/src/Humanizer/TimeSpanHumanizeExtensions.cs
index b9757fe54..c686fc377 100644
--- a/src/Humanizer/TimeSpanHumanizeExtensions.cs
+++ b/src/Humanizer/TimeSpanHumanizeExtensions.cs
@@ -155,8 +155,9 @@ private static int GetNormalCaseTimeAsInteger(int timeNumberOfUnits, double tota
 
         private static string BuildFormatTimePart(IFormatter cultureFormatter, TimeUnit timeUnitType, int amountOfTimeUnits)
         {
+            // Always use positive units to account for negative timespans
             return amountOfTimeUnits != 0
-                ? cultureFormatter.TimeSpanHumanize(timeUnitType, amountOfTimeUnits)
+                ? cultureFormatter.TimeSpanHumanize(timeUnitType, Math.Abs(amountOfTimeUnits))
                 : null;
         }