diff --git a/lib/std/mem.zig b/lib/std/mem.zig
index 13fd3d05f3..86fe85753a 100644
--- a/lib/std/mem.zig
+++ b/lib/std/mem.zig
@@ -382,6 +382,9 @@ pub fn zeroes(comptime T: type) T {
             }
         },
         .Array => |info| {
+            if (info.sentinel) |sentinel| {
+                return [_:sentinel]info.child{zeroes(info.child)} ** info.len;
+            }
             return [_]info.child{zeroes(info.child)} ** info.len;
         },
         .Vector,
@@ -442,6 +445,7 @@ test "mem.zeroes" {
         array: [2]u32,
         optional_int: ?u8,
         empty: void,
+        sentinel: [3:0]u8,
     };
 
     const b = zeroes(ZigStruct);
@@ -466,6 +470,9 @@ test "mem.zeroes" {
         testing.expectEqual(@as(u32, 0), e);
     }
     testing.expectEqual(@as(?u8, null), b.optional_int);
+    for (b.sentinel) |e| {
+        testing.expectEqual(@as(u8, 0), e);
+    }
 }
 
 pub fn secureZero(comptime T: type, s: []T) void {