diff --git a/var/spack/repos/builtin/packages/icu4c/package.py b/var/spack/repos/builtin/packages/icu4c/package.py
index 7f8f02e4808..3766bca23fd 100644
--- a/var/spack/repos/builtin/packages/icu4c/package.py
+++ b/var/spack/repos/builtin/packages/icu4c/package.py
@@ -72,7 +72,7 @@ def url_for_version(self, version):
         return url.format(version.dashed, version.underscored)
 
     def flag_handler(self, name, flags):
-        if name == "cxxflags":
+        if name == "cxxflags" and not self.spec.platform == "windows":
             # Control of the C++ Standard is via adding the required "-std"
             # flag to CXXFLAGS in env
             flags.append(getattr(self.compiler, f"cxx{self.spec.variants['cxxstd'].value}_flag"))
@@ -125,7 +125,7 @@ def msbuild_args(self):
     @property
     def build_directory(self):
         solution_path = pathlib.Path(self.pkg.stage.source_path)
-        if self.spec.satsifies("@:67"):
+        if self.spec.satisfies("@:67"):
             solution_path = solution_path / "icu"
         solution_path = solution_path / "source" / "allinone"
         return str(solution_path)