diff --git a/src/rules/no-invalid-named-grid-areas.js b/src/rules/no-invalid-named-grid-areas.js
index 976f2ca6..1f8897f0 100644
--- a/src/rules/no-invalid-named-grid-areas.js
+++ b/src/rules/no-invalid-named-grid-areas.js
@@ -22,6 +22,11 @@
  */
 const nullCellToken = /^\.+$/u;
 
+/**
+ * Regular expression to match sequences of CSS whitespace
+ */
+const cssWhitespace = /[\t\n ]+/u;
+
 /**
  * Finds non-rectangular grid areas in a 2D grid
  * @param {string[][]} grid 2D array representing the grid areas
@@ -131,7 +136,7 @@ export default /** @satisfies {NoInvalidNamedGridAreasRuleDefinition} */ ({
 							continue;
 						}
 
-						const row = trimmedValue.split(" ").filter(Boolean);
+						const row = trimmedValue.split(cssWhitespace);
 						grid.push(row);
 
 						if (firstRowLen === null) {
diff --git a/tests/rules/no-invalid-named-grid-areas.test.js b/tests/rules/no-invalid-named-grid-areas.test.js
index ea4203c5..98d439da 100644
--- a/tests/rules/no-invalid-named-grid-areas.test.js
+++ b/tests/rules/no-invalid-named-grid-areas.test.js
@@ -29,6 +29,9 @@ ruleTester.run("no-invalid-named-grid-areas", rule, {
 		'.grid { grid-template-areas: "a a a" "b b b"; }',
 		'.grid { grid-template-areas: " a a a " "b b b"; }',
 		'.grid { GRID-TEMPLATE-AREAS: "a a a" "b b b"; }',
+		'.grid { grid-template-areas: "a\tb" "a b"; }',
+		'.grid { grid-template-areas: "a\t b" "a b"; }',
+
 		dedent`
         .grid { grid-template-areas: "head head"
                                      "nav  main"
@@ -76,6 +79,18 @@ ruleTester.run("no-invalid-named-grid-areas", rule, {
 				},
 			],
 		},
+		{
+			code: 'a { grid-template-areas: "a\ta" "a b c"; }',
+			errors: [
+				{
+					messageId: "unevenGridArea",
+					line: 1,
+					column: 32,
+					endLine: 1,
+					endColumn: 39,
+				},
+			],
+		},
 		{
 			code: 'a { grid-template-areas: "a a a" "b b a"; }',
 			errors: [