diff --git a/src/Cake.Curl.Tests/CurlUploadFileTests.cs b/src/Cake.Curl.Tests/CurlUploadFileTests.cs
index cb6f486..6d6c9cf 100644
--- a/src/Cake.Curl.Tests/CurlUploadFileTests.cs
+++ b/src/Cake.Curl.Tests/CurlUploadFileTests.cs
@@ -128,7 +128,7 @@ public void Should_Find_Curl_Runner_If_Tool_Path_Not_Provided()
             }
 
             [Fact]
-            public void Should_Set_The_Path_Of_The_File_To_Upload_In_Quotes_As_Argument()
+            public void Should_Set_The_Absolute_Path_Of_The_File_To_Upload_In_Quotes_As_Argument()
             {
                 // Given
                 var fixture = new CurlUploadFileFixture
@@ -140,7 +140,7 @@ public void Should_Set_The_Path_Of_The_File_To_Upload_In_Quotes_As_Argument()
                 var result = fixture.Run();
 
                 // Then
-                Assert.Contains("--upload-file \"file/to/upload\"", result.Args);
+                Assert.Contains("--upload-file \"/Working/file/to/upload\"", result.Args);
             }
 
             [Fact]
diff --git a/src/Cake.Curl/CurlUploadRunner.cs b/src/Cake.Curl/CurlUploadRunner.cs
index b4342e1..a9def6e 100644
--- a/src/Cake.Curl/CurlUploadRunner.cs
+++ b/src/Cake.Curl/CurlUploadRunner.cs
@@ -85,7 +85,10 @@ private ProcessArgumentBuilder GetArguments(
             var arguments = new ProcessArgumentBuilder();
             arguments.AppendSettings(settings);
 
-            arguments.AppendSwitchQuoted("--upload-file", filePath.FullPath);
+            arguments.AppendSwitchQuoted(
+                "--upload-file",
+                filePath.MakeAbsolute(_environment).FullPath);
+
             arguments.AppendSwitch("--url", host.AbsoluteUri);
 
             return arguments;