diff --git a/src/sourcemap/sourcemap.zig b/src/sourcemap/sourcemap.zig
index b9d19b40d7..f7a92a9c1f 100644
--- a/src/sourcemap/sourcemap.zig
+++ b/src/sourcemap/sourcemap.zig
@@ -698,7 +698,7 @@ pub const LineOffsetTable = struct {
             if (c > 0x7F and columns_for_non_ascii.items.len == 0) {
                 std.debug.assert(@ptrToInt(
                     remaining.ptr,
-                ) > @ptrToInt(
+                ) >= @ptrToInt(
                     contents.ptr,
                 ));
                 // we have a non-ASCII character, so we need to keep track of the