diff --git a/src/Mods/SecExp/js/secExp.js b/src/Mods/SecExp/js/secExp.js
index b13b67b43256866f51a1c70cb9eb89608e92cc2c..7b6654a27fb00e3e1e67a42d0063ade5794badaa 100644
--- a/src/Mods/SecExp/js/secExp.js
+++ b/src/Mods/SecExp/js/secExp.js
@@ -391,6 +391,9 @@ App.SecExp.Check = (function() {
 		if (jsDef(V.secExp)) {
 			if (V.secExpEnabled !== 1) {
 				V.secExpEnabled = V.secExp;
+				if (typeof V.secExpEnabled !== "number") {
+					V.secExpEnabled = 0;
+				}
 			}
 			delete V.secExp;
 		}