diff --git a/OpenRA.Test/OpenRA.Game/FieldLoaderTest.cs b/OpenRA.Test/OpenRA.Game/FieldLoaderTest.cs
index fa64904278..f61ef54f76 100644
--- a/OpenRA.Test/OpenRA.Game/FieldLoaderTest.cs
+++ b/OpenRA.Test/OpenRA.Game/FieldLoaderTest.cs
@@ -244,7 +244,7 @@ namespace OpenRA.Test
 				new TestCaseData(123),
 				new TestCaseData((ushort)123),
 				new TestCaseData(123L),
-				new TestCaseData(123.4f),
+				new TestCaseData(123.4f.ToString(CultureInfo.InvariantCulture)),
 				new TestCaseData(123m),
 				new TestCaseData("test"),
 				new TestCaseData(Color.CornflowerBlue),
diff --git a/OpenRA.Test/OpenRA.Game/FieldSaverTest.cs b/OpenRA.Test/OpenRA.Game/FieldSaverTest.cs
index 3cd35cb5d8..d065234b20 100644
--- a/OpenRA.Test/OpenRA.Game/FieldSaverTest.cs
+++ b/OpenRA.Test/OpenRA.Game/FieldSaverTest.cs
@@ -31,7 +31,7 @@ namespace OpenRA.Test
 				new TestCaseData(123),
 				new TestCaseData((ushort)123),
 				new TestCaseData(123L),
-				new TestCaseData(123.4f),
+				new TestCaseData(123.4f.ToString(CultureInfo.InvariantCulture)),
 				new TestCaseData(123m),
 				new TestCaseData("test"),
 				new TestCaseData(Color.CornflowerBlue),