diff --git a/source/index.ts b/source/index.ts
index 07528b2..e366b82 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -384,7 +384,7 @@ is.oddInteger = isAbsoluteMod2(1);
 
 is.emptyArray = (value: unknown): value is never[] => is.array(value) && value.length === 0;
 
-is.nonEmptyArray = (value: unknown): value is [unknown, ...unknown[]] => is.array(value) && value.length > 0;
+is.nonEmptyArray = <T = unknown>(value: T | T[]): value is [T, ...T[]] => is.array(value) && value.length > 0;
 
 is.emptyString = (value: unknown): value is '' => is.string(value) && value.length === 0;
 
diff --git a/test/test.ts b/test/test.ts
index 11f7f9c..d72d41d 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -1448,16 +1448,35 @@ test('is.nonEmptyArray', t => {
 		assert.nonEmptyArray(new Array()); // eslint-disable-line @typescript-eslint/no-array-constructor
 	});
 
-	// https://github.com/sindresorhus/is/issues/174
-	// {
-	// 	const strings = ['foo', 'bar']
-	// 	const function_ = (value: string) => value;
+	{
+		const strings = ['🦄', 'unicorn'];
+		const function_ = (value: string) => value;
 
-	// 	if (is.nonEmptyArray(strings)) {
-	// 		const value = strings[0]
-	// 		function_(value);
-	// 	}
-	// }
+		if (is.nonEmptyArray(strings)) {
+			const value = strings[0];
+			function_(value);
+		}
+	}
+
+	{
+		const mixed = ['🦄', 'unicorn', 1, 2];
+		const function_ = (value: string | number) => value;
+
+		if (is.nonEmptyArray(mixed)) {
+			const value = mixed[0];
+			function_(value);
+		}
+	}
+
+	{
+		const arrays = [['🦄'], ['unicorn']];
+		const function_ = (value: string[]) => value;
+
+		if (is.nonEmptyArray(arrays)) {
+			const value = arrays[0];
+			function_(value);
+		}
+	}
 });
 
 test('is.emptyString', t => {