diff --git a/Netkan/Validators/InstallValidator.cs b/Netkan/Validators/InstallValidator.cs
index 9312f35885..151d44c9db 100644
--- a/Netkan/Validators/InstallValidator.cs
+++ b/Netkan/Validators/InstallValidator.cs
@@ -87,6 +87,10 @@ public void Validate(Metadata metadata)
                         if (stanza.ContainsKey(propName))
                         {
                             string val  = (string)stanza[propName];
+                            if (string.IsNullOrEmpty(val))
+                            {
+                                throw new Kraken($"Install property '{propName}' is null or empty");
+                            }
                             string norm = CKANPathUtils.NormalizePath(val);
                             if (val != norm)
                             {