diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b138ecb46..c0285c7ef1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,7 @@
 - Fix issue where using partial application `...` can generate code that uses `Curry` at runtime. https://github.com/rescript-lang/rescript-compiler/pull/6872
 - Avoid generation of `Curry` with reverse application `|>`. https://github.com/rescript-lang/rescript-compiler/pull/6876
 - Fix issue where the internal ppx for pipe `->` would not use uncurried application in uncurried mode. https://github.com/rescript-lang/rescript-compiler/pull/6878
+- Fix build after calling without `-warn-error`, see https://github.com/rescript-lang/rescript-compiler/issues/6868 for more details. https://github.com/rescript-lang/rescript-compiler/pull/6877
 
 #### :house: Internal
 
diff --git a/jscomp/bsb/bsb_ninja_check.ml b/jscomp/bsb/bsb_ninja_check.ml
index 09ad563da5..b11bf66c12 100644
--- a/jscomp/bsb/bsb_ninja_check.ml
+++ b/jscomp/bsb/bsb_ninja_check.ml
@@ -43,6 +43,7 @@ type check_result =
   | Bsb_bsc_version_mismatch
   | Bsb_forced
   | Bsb_package_kind_inconsistent
+  | Bsb_regenerate_required
   | Other of string
 
 let pp_check_result fmt (check_resoult : check_result) =
@@ -55,6 +56,7 @@ let pp_check_result fmt (check_resoult : check_result) =
     | Bsb_bsc_version_mismatch -> "Bsc or bsb version mismatch"
     | Bsb_forced -> "Bsb forced rebuild"
     | Bsb_package_kind_inconsistent -> "The package was built in different mode"
+    | Bsb_regenerate_required -> "Bsb need regenerate build.ninja"
     | Other s -> s)
 
 let rec check_aux cwd (xs : string list) =
@@ -91,13 +93,14 @@ let record_global_atime buf name =
   Ext_buffer.add_string_char buf (hex_of_float stamp) '\n'
 
 let record ~(package_kind : Bsb_package_kind.t) ~per_proj_dir ~file
-    ~(config : Bsb_config_types.t) (file_or_dirs : string list) : unit =
+    ~(config : Bsb_config_types.t) ~(warn_as_error: string option) (file_or_dirs : string list) : unit =
   let buf = Ext_buffer.create 1_000 in
   Ext_buffer.add_string_char buf Bs_version.version '\n';
   Ext_buffer.add_string_char buf per_proj_dir '\n';
   Ext_buffer.add_string_char buf
     (Bsb_package_kind.encode_no_nl package_kind)
     '\n';
+  Ext_buffer.add_string_char buf (match warn_as_error with | Some s -> s | None -> "0") '\n';
   Ext_list.iter file_or_dirs (fun f ->
       Ext_buffer.add_string_char buf f '\t';
       Ext_buffer.add_string_char buf
@@ -119,21 +122,25 @@ let record ~(package_kind : Bsb_package_kind.t) ~per_proj_dir ~file
     Even forced, we still need walk through a little
     bit in case we found a different version of compiler
 *)
-let check ~(package_kind : Bsb_package_kind.t) ~(per_proj_dir : string) ~forced
-    ~file : check_result =
+let check ~(package_kind : Bsb_package_kind.t) ~(per_proj_dir : string) ~forced ~(warn_as_error: string option) ~file : check_result =
   match open_in_bin file with
   (* Windows binary mode*)
   | exception _ -> Bsb_file_not_exist
   | ic -> (
       match List.rev (Ext_io.rev_lines_of_chann ic) with
       | exception _ -> Bsb_file_corrupted
-      | version :: source_directory :: package_kind_str :: dir_or_files -> (
+      | version :: source_directory :: package_kind_str :: previous_warn_as_error :: dir_or_files -> (
+          let warn_as_error_changed = match warn_as_error with
+            | None -> previous_warn_as_error <> "0"
+            | Some current -> current <> previous_warn_as_error in
+
           if version <> Bs_version.version then Bsb_bsc_version_mismatch
           else if per_proj_dir <> source_directory then
             Bsb_source_directory_changed
           else if forced then Bsb_forced (* No need walk through *)
           else if Bsb_package_kind.encode_no_nl package_kind <> package_kind_str
           then Bsb_package_kind_inconsistent
+          else if warn_as_error_changed then Bsb_regenerate_required
           else
             try check_aux per_proj_dir dir_or_files
             with e ->
diff --git a/jscomp/bsb/bsb_ninja_check.mli b/jscomp/bsb/bsb_ninja_check.mli
index f2f48c644e..adff881079 100644
--- a/jscomp/bsb/bsb_ninja_check.mli
+++ b/jscomp/bsb/bsb_ninja_check.mli
@@ -38,6 +38,7 @@ type check_result =
   | Bsb_bsc_version_mismatch
   | Bsb_forced
   | Bsb_package_kind_inconsistent
+  | Bsb_regenerate_required
   | Other of string
 
 val pp_check_result : Format.formatter -> check_result -> unit
@@ -47,6 +48,7 @@ val record :
   per_proj_dir:string ->
   file:string ->
   config:Bsb_config_types.t ->
+  warn_as_error:string option ->
   string list ->
   unit
 (** [record cwd file relevant_file_or_dirs]
@@ -64,6 +66,7 @@ val check :
   package_kind:Bsb_package_kind.t ->
   per_proj_dir:string ->
   forced:bool ->
+  warn_as_error: string option ->
   file:string ->
   check_result
 (** check if [build.ninja] should be regenerated *)
diff --git a/jscomp/bsb/bsb_ninja_regen.ml b/jscomp/bsb/bsb_ninja_regen.ml
index d2953b93ee..cabf8d84bd 100644
--- a/jscomp/bsb/bsb_ninja_regen.ml
+++ b/jscomp/bsb/bsb_ninja_regen.ml
@@ -36,7 +36,7 @@ let regenerate_ninja ~(package_kind : Bsb_package_kind.t) ~forced ~per_proj_dir
   let lib_bs_dir = per_proj_dir // lib_artifacts_dir in
   let output_deps = lib_bs_dir // bsdeps in
   let check_result =
-    Bsb_ninja_check.check ~package_kind ~per_proj_dir ~forced ~file:output_deps
+    Bsb_ninja_check.check ~package_kind ~per_proj_dir ~forced ~warn_as_error ~file:output_deps
   in
   let config_filename, config_json =
     Bsb_config_load.load_json ~per_proj_dir ~warn_legacy_config
@@ -45,6 +45,7 @@ let regenerate_ninja ~(package_kind : Bsb_package_kind.t) ~forced ~per_proj_dir
   | Good -> None (* Fast path, no need regenerate ninja *)
   | Bsb_forced | Bsb_bsc_version_mismatch | Bsb_package_kind_inconsistent
   | Bsb_file_corrupted | Bsb_file_not_exist | Bsb_source_directory_changed
+  | Bsb_regenerate_required
   | Other _ ->
       Bsb_log.info "@{<info>BSB check@} build spec : %a @."
         Bsb_ninja_check.pp_check_result check_result;
@@ -94,7 +95,7 @@ let regenerate_ninja ~(package_kind : Bsb_package_kind.t) ~forced ~per_proj_dir
         config;
       (* PR2184: we still need record empty dir
           since it may add files in the future *)
-      Bsb_ninja_check.record ~package_kind ~per_proj_dir ~config
+      Bsb_ninja_check.record ~package_kind ~per_proj_dir ~config ~warn_as_error
         ~file:output_deps
         (config.filename :: config.file_groups.globbed_dirs);
       Some config
diff --git a/jscomp/build_tests/build_warn_as_error/input.js b/jscomp/build_tests/build_warn_as_error/input.js
index a00405f010..fd39a5d5af 100644
--- a/jscomp/build_tests/build_warn_as_error/input.js
+++ b/jscomp/build_tests/build_warn_as_error/input.js
@@ -2,16 +2,47 @@ var p = require("child_process");
 var assert = require("assert");
 var { rescript_exe } = require("#cli/bin_path");
 
-var o = p.spawnSync(rescript_exe, ["build", "-warn-error", "+110"], {
+var o1 = p.spawnSync(rescript_exe, ["build"], {
   encoding: "utf8",
   cwd: __dirname,
 });
 
-var error_message = o.stdout
+var first_message = o1.stdout
   .split("\n")
   .map(s => s.trim())
-  .includes("Warning number 110 (configured as error)");
+  .find(s => s == "Warning number 110");
 
-if (!error_message) {
-  assert.fail(o.stdout);
+if (!first_message) {
+  assert.fail(o1.stdout);
+}
+
+// Second build using -warn-error +110
+var o2 = p.spawnSync(rescript_exe, ["build", "-warn-error", "+110"], {
+  encoding: "utf8",
+  cwd: __dirname,
+});
+
+var second_message = o2.stdout
+  .split("\n")
+  .map(s => s.trim())
+  .find(s => s == "Warning number 110 (configured as error)");
+
+if (!second_message) {
+  assert.fail(o2.stdout);
+}
+
+// Third build, without -warn-error +110
+// The result should not be a warning as error
+var o3 = p.spawnSync(rescript_exe, ["build"], {
+  encoding: "utf8",
+  cwd: __dirname,
+});
+
+var third_message = o3.stdout
+  .split("\n")
+  .map(s => s.trim())
+  .find(s => s == "Dependency Finished");
+
+if (!third_message) {
+  assert.fail(o3.stdout);
 }