diff --git a/.github/actions/build/action.yml b/.github/actions/build/action.yml
index 2294d2d..a55f576 100644
--- a/.github/actions/build/action.yml
+++ b/.github/actions/build/action.yml
@@ -78,7 +78,7 @@ runs:
         emcc -v
 # Windows only
     - name: Windows - Setup MinGW for Windows/MinGW build
-      uses: egor-tensin/setup-mingw@v2
+      uses: egor-tensin/setup-mingw@v2.2.0
       if: ${{ inputs.platform == 'windows' }}
       with:
         version: 12.2.0
diff --git a/.github/workflows/builds.yml b/.github/workflows/builds.yml
index ae84c98..f8616d6 100644
--- a/.github/workflows/builds.yml
+++ b/.github/workflows/builds.yml
@@ -21,17 +21,17 @@ jobs:
             target-type: template_debug
             os: ubuntu-20.04
 
-#         - platform: windows
-#           float-precision: single
-#           arch: x86_32
-#           target-type: template_debug
-#           os: windows-latest
-
-#         - platform: windows
-#           float-precision: single
-#           arch: x86_64
-#           target-type: template_debug
-#           os: windows-latest
+          - platform: windows
+            float-precision: single
+            arch: x86_32
+            target-type: template_debug
+            os: windows-latest
+
+          - platform: windows
+            float-precision: single
+            arch: x86_64
+            target-type: template_debug
+            os: windows-latest
 
           - platform: macos
             float-precision: single
@@ -144,17 +144,17 @@ jobs:
             target-type: template_debug
             os: ubuntu-20.04
 
-#         - platform: windows
-#           float-precision: double
-#           arch: x86_32
-#           target-type: template_debug
-#           os: windows-latest
+          - platform: windows
+            float-precision: double
+            arch: x86_32
+            target-type: template_debug
+            os: windows-latest
 
-#         - platform: windows
-#           float-precision: double
-#           arch: x86_64
-#           target-type: template_debug
-#           os: windows-latest
+          - platform: windows
+            float-precision: double
+            arch: x86_64
+            target-type: template_debug
+            os: windows-latest
 
           - platform: macos
             float-precision: double
@@ -286,13 +286,16 @@ jobs:
 
 # Test
       - name: Setup Godot Action
-        if: ${{ matrix.float-precision == 'single' && matrix.target-type == 'template_debug' && (matrix.platform == 'linux' || matrix.platform == 'macos' || matrix.platform == 'windows') }}
+        if: ${{ matrix.float-precision == 'single' && matrix.target-type == 'template_debug' && (matrix.platform == 'linux' || matrix.platform == 'macos' || (matrix.platform == 'windows' && matrix.arch == 'x86_64')) }}
         uses: chickensoft-games/setup-godot@v2.1.1
         with:
           version: 4.3.0
           use-dotnet: false
+      - name: Set GODOT_EXE on windows
+        if: ${{ matrix.platform == 'windows' }}
+        run: echo "GODOT_EXE=C:\Users\runneradmin\godot\Godot_v4.3-stable_win64.exe" >> $env:GITHUB_ENV
       - name: Test
-        if: ${{ matrix.float-precision == 'single' && matrix.target-type == 'template_debug' && (matrix.platform == 'linux' || matrix.platform == 'macos' || matrix.platform == 'windows') }}
+        if: ${{ matrix.float-precision == 'single' && matrix.target-type == 'template_debug' && (matrix.platform == 'linux' || matrix.platform == 'macos' || (matrix.platform == 'windows' && matrix.arch == 'x86_64')) }}
         run: make test -j
 
 # Sign
diff --git a/SConstruct b/SConstruct
index 4a428da..f89fb7a 100644
--- a/SConstruct
+++ b/SConstruct
@@ -32,7 +32,7 @@ const char* {constant_name} = R"({file_content})";
 """)
 
 def is_submodule_initialized(path):
-  return os.path.isdir(path) and os.listdir(path)
+    return os.path.isdir(path) and os.listdir(path)
 
 # -------------------------- Build definition --------------------------
 
@@ -64,15 +64,20 @@ env.Append(
         "DISABLE_AUTOLOAD": "1",
         "WITH_C_LOADER": "0",
         "WITH_MULTITHREAD_CHECKS": "0",
-        "WITH_SYSTEM_EXTRAS": "0",
-        "HAVE_COMPLEX_NUMBERS": "0" if env["platform"] == "windows" else "1"
+        "WITH_SYSTEM_EXTRAS": "0"
     }
 )
 
+s7_env = env.Clone()
+s7_obj = s7_env.SharedObject(target='s7', source='s7/s7.c')
+if s7_env["platform"] == "windows":
+    s7_env.Append(
+        CCFLAGS=['/std:c17']
+    )
+
 sources = [
     Glob("src/*.cpp"),
-    Glob("src/repl/*.cpp"),
-    Glob("s7/s7.c")
+    Glob("src/repl/*.cpp")
 ]
 
 if env["target"] in ["editor", "template_debug"]:
@@ -92,7 +97,7 @@ if env["platform"] == "macos" or env["platform"] == "ios":
 library_file = "bin/{}/{}{}".format(env["platform"], file_path, file)
 library = env.SharedLibrary(
     library_file,
-    source=sources,
+    source=sources + [s7_obj],
 )
 
 copy = env.InstallAs("{}/bin/{}/{}lib{}".format(project_dir, env["platform"], file_path, file), library)
diff --git a/demo/addons/s7/test/s7_scheme_tests.gd b/demo/addons/s7/test/s7_scheme_tests.gd
index 63cc8ba..8951dc1 100644
--- a/demo/addons/s7/test/s7_scheme_tests.gd
+++ b/demo/addons/s7/test/s7_scheme_tests.gd
@@ -22,7 +22,7 @@ func apply(symbol: String, args: Array):
   return r
 
 func can_exchange_primitive_values():
-  eval("(format #t \"Hello from Scheme!\n\")")
+  eval("(format #f \"Hello from Scheme!~%\")")
 
   define("an-integer", 41)
   eval("an-integer")
diff --git a/s7 b/s7
index 8521f28..828a36b 160000
--- a/s7
+++ b/s7
@@ -1 +1 @@
-Subproject commit 8521f288ed8434bcdd72b374182b37d88acf5683
+Subproject commit 828a36b8f02e87b75f78b691a6686ea512b83416
diff --git a/test/golden/s7_scheme_tests.txt b/test/golden/s7_scheme_tests.txt
index c6ff6c4..1d09585 100644
--- a/test/golden/s7_scheme_tests.txt
+++ b/test/golden/s7_scheme_tests.txt
@@ -1,8 +1,6 @@
 Godot Engine v4.3.stable.official.77dcf97d8 - https://godotengine.org
 
-Hello from Scheme!
-(format #t "Hello from Scheme!
-")=>String(Hello from Scheme!
+(format #f "Hello from Scheme!~%")=>String(Hello from Scheme!
 )
 an-integer=>int(41)
 (+ 1 an-integer)=>int(42)
diff --git a/test/test-main.scm b/test/test-main.scm
index 8c54a96..ba29c13 100644
--- a/test/test-main.scm
+++ b/test/test-main.scm
@@ -7,18 +7,25 @@
          (error 'assertion-error "ERROR~%# (assert-equals ~a ~a)~%## ~a~%`~a`~%## ~a~%`~a`" lq rq lq l' rq r')))))
 
 (define (godot scene)
-  (system (format #f "godot --path demo ~a --headless --quit" scene) #t))
+  (let* ((program (or (getenv "GODOT_EXE") (getenv "GODOT") "godot"))
+         (cmd (format #f "\"~a\" --path demo ~a --headless --quit" program scene)))
+    (format #t "~a~%" cmd)
+    (system cmd #t)))
 
 (define (read-file path)
   (call-with-input-file path
     (lambda (p) (read-string 65535 p))))
 
+(define (diff file1 file2)
+  (system (format #f "diff --strip-trailing-cr --color=auto -u ~a ~a" file1 file2)))
+
 (define* (golden-scene-test scene golden-file)
   (let ((output-file "bin/s7_scheme_tests.txt"))
     (call-with-output-file output-file
       (lambda (p) (write-string (godot scene) p)))
-    (unless (= 0 (system (format #f "diff --color=auto -u ~a ~a" golden-file output-file)))
-      (error 'assertion-error "ERROR: output of scene `~a` doesn't match golden file `~a`." scene golden-file))))
+    (unless (= 0 (diff golden-file output-file))
+      (error 'assertion-error
+             "ERROR: output of scene `~a` doesn't match golden file `~a`." scene golden-file))))
 
 (define (golden-scene-tests)
   (golden-scene-test