diff --git a/chrome/content/zotero/xpcom/data/items.js b/chrome/content/zotero/xpcom/data/items.js
index 83832baf31..c2cf421c0d 100644
--- a/chrome/content/zotero/xpcom/data/items.js
+++ b/chrome/content/zotero/xpcom/data/items.js
@@ -1983,11 +1983,9 @@ Zotero.Items = function() {
 		'</span>',
 		// Any punctuation at the beginning of the string
 		'^\\p{P}+',
-		// Initial, opening, closing, final, other punctuation:
-		// pretty much anything that isn't a connector/dash.
-		// Positively matching each of these classes compiles to a cleaner
-		// native RegExp than XRegExp('[^\\P{P}\\p{Pd}]')
-		'[\\p{Pi}\\p{Ps}\\p{Pe}\\p{Pf}\\p{Po}]'
+		// Initial, opening, closing, final, and "other" punctuation that isn't
+		// followed by a digit. Doesn't match connectors or dashes.
+		'[\\p{Pi}\\p{Ps}\\p{Pe}\\p{Pf}\\p{Po}](?!\\d)'
 	].map(re => Zotero.Utilities.XRegExp(re, 'g'));
 	
 	
diff --git a/test/tests/itemsTest.js b/test/tests/itemsTest.js
index c2f9f4a04e..4ea5cf2f60 100644
--- a/test/tests/itemsTest.js
+++ b/test/tests/itemsTest.js
@@ -1163,5 +1163,17 @@ describe("Zotero.Items", function () {
 				assert.equal(Zotero.Items.getSortTitle(input), expected);
 			}
 		});
+
+		it("should not strip any punctuation before a digit", function () {
+			let tests = [
+				['1.5', '1.5'],
+				['abc .5', 'abc .5'],
+				['abc 5.', 'abc 5']
+			];
+
+			for (let [input, expected] of tests) {
+				assert.equal(Zotero.Items.getSortTitle(input), expected);
+			}
+		});
 	});
 });