diff --git a/chrome/content/zotero/xpcom/utilities_internal.js b/chrome/content/zotero/xpcom/utilities_internal.js
index decfd8cfd5..de9c2b45a0 100644
--- a/chrome/content/zotero/xpcom/utilities_internal.js
+++ b/chrome/content/zotero/xpcom/utilities_internal.js
@@ -2228,7 +2228,15 @@ Zotero.Utilities.Internal = {
 				}
 				if (['if', 'elseif'].includes(operator)) {
 					if (!level.executed) {
-						level.condition = level.parentCondition && (args[2] ? vars[args[0]].toLowerCase() == args[2].toLowerCase() : !!vars[args[0]]);
+						level.condition = level.parentCondition && (
+							args[2]
+								? vars[args[0]].toLowerCase() == args[2].toLowerCase()
+								: (
+									Array.isArray(vars[args[0]])
+										? !!vars[args[0]].length
+										: !!vars[args[0]]
+								)
+						);
 						level.executed = level.condition;
 					}
 					else {
diff --git a/test/tests/utilities_internalTest.js b/test/tests/utilities_internalTest.js
index f8122036f9..1e5028b4ad 100644
--- a/test/tests/utilities_internalTest.js
+++ b/test/tests/utilities_internalTest.js
@@ -529,11 +529,14 @@ describe("Zotero.Utilities.Internal", function () {
 				v1: '1',
 				v2: (pars) => pars.a1 + pars.a2 + pars.a3,
 				v3: () => undefined,
+				ar1: [],
+				ar2: [1, 2]
 			};
-			var template = `{{ v1}}{{v2 a1= 1  a2 =' 2' a3 = "3 "}}{{v3}}{{v4}}`;
+			var template = `{{ v1}}{{v2 a1= 1  a2 =' 2' a3 = "3 "}}{{v3}}{{v4}}{{if ar1}}ar1{{endif}}{{if ar2}}{{ar2}}{{endif}}`;
 			var html = Zotero.Utilities.Internal.generateHTMLFromTemplate(template, vars);
-			assert.equal(html, '11 23 ');
+			assert.equal(html, '11 23 1,2');
 		});
+
 		it("should support nested 'if' statements", function () {
 			var vars = {
 				v1: '1',