diff --git a/src/terminal/Tabstops.zig b/src/terminal/Tabstops.zig
index 8dbe67893..8955447f2 100644
--- a/src/terminal/Tabstops.zig
+++ b/src/terminal/Tabstops.zig
@@ -140,7 +140,7 @@ pub fn resize(
 
     // What we need in the dynamic size
     const size = cols - prealloc_columns;
-    if (size < self.dynamic_stops.len) {
+    if (size <= self.dynamic_stops.len) {
         self.cols = cols;
         return;
     }
@@ -221,6 +221,15 @@ test "Tabstops: dynamic allocations" {
     try testing.expect(!t.get(5));
 }
 
+test "Tabstops: resize to existing capacity does not allocate" {
+    var backing: [prealloc_columns]Unit = undefined;
+    var fixed = std.heap.FixedBufferAllocator.init(&backing);
+    var t: Tabstops = .{};
+
+    try t.resize(fixed.allocator(), prealloc_columns * 2);
+    try t.resize(fixed.allocator(), prealloc_columns * 2);
+}
+
 test "Tabstops: interval" {
     var t: Tabstops = try init(testing.allocator, 80, 4);
     defer t.deinit(testing.allocator);