diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ece235989..2494fb5749 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -68,6 +68,7 @@ All notable changes to this project will be documented in this file.
 - [GUI] Only show replace col if a replaced module is installed (#2697 by: HebaruSan; reviewed: politas)
 - [GUI] Update all CKAN URL references (#2702 by: DasSkelett; reviewed: HebaruSan)
 - [GUI] Select 2nd instead of 3rd cell on MarkAllUpdatesToolButton_Click (#2704 by: DasSkelett; reviewed: politas)
+- [GUI] Prevent Null entry in CompatibleKSPVersions (#2707 by: politas; reviewed: DasSkelett)
 
 ## v1.25.4 Kennedy
 
diff --git a/GUI/CompatibleKspVersionsDialog.cs b/GUI/CompatibleKspVersionsDialog.cs
index dae8628ff2..d88c4d5a38 100644
--- a/GUI/CompatibleKspVersionsDialog.cs
+++ b/GUI/CompatibleKspVersionsDialog.cs
@@ -86,6 +86,11 @@ private void AddVersionToListButton_Click(object sender, EventArgs e)
             {
                 return;
             }
+            if (AddVersionToListTextBox.Text.ToLower() == "any") 
+            {
+                MessageBox.Show("Version has invalid format", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
             try
             {
                 var version = KspVersion.Parse(AddVersionToListTextBox.Text);