diff --git a/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs b/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs
index 67e52a37b0b..b12c82b349d 100644
--- a/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs
+++ b/modules/mono/glue/GodotSharp/GodotSharp/Core/StringExtensions.cs
@@ -1539,7 +1539,7 @@ namespace Godot
                 if (end < 0)
                     end = len;
                 if (allowEmpty || end > from)
-                    ret.Add(float.Parse(instance.AsSpan(from), CultureInfo.InvariantCulture));
+                    ret.Add(float.Parse(instance.AsSpan(from, end - from), CultureInfo.InvariantCulture));
                 if (end == len)
                     break;