diff --git a/core/cxx_stl_setup.mk b/core/cxx_stl_setup.mk
index f150714cec..cda45a0ec1 100644
--- a/core/cxx_stl_setup.mk
+++ b/core/cxx_stl_setup.mk
@@ -14,7 +14,7 @@ ifeq ($(strip $(LOCAL_CXX_STL)),default)
                 my_cxx_stl := libc++_static
             endif
 
-            ifdef USE_MINGW
+            ifeq ($($(my_prefix)OS),windows)
                 # libc++ is not supported on mingw.
                 my_cxx_stl := libstdc++
             endif
@@ -36,6 +36,14 @@ else
         # the two options use different names for the STLs.
         $(error $(LOCAL_PATH): $(LOCAL_MODULE): Must use LOCAL_NDK_STL_VARIANT rather than LOCAL_CXX_STL for NDK binaries)
     endif
+    ifdef LOCAL_IS_HOST_MODULE
+        ifeq ($($(my_prefix)OS),windows)
+            ifneq ($(filter $(my_cxx_stl),libc++ libc++_static),)
+                # libc++ is not supported on mingw.
+                my_cxx_stl := libstdc++
+            endif
+        endif
+    endif
 endif
 
 # Yes, this is actually what the clang driver does.