diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index 061511b0d..e946b24db 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -20,6 +20,7 @@
 # They will be compiled against libcore and not the host JRE.
 #
 
+ifeq ($(HOST_OS),linux)
 USE_CORE_LIB_BOOTCLASSPATH := true
 
 #######################################
@@ -108,3 +109,5 @@ $(LOCAL_BUILT_MODULE): $(built_dex) $(java_resource_sources)
 	$(add-dex-to-package)
 
 USE_CORE_LIB_BOOTCLASSPATH :=
+
+endif
diff --git a/core/host_dalvik_static_java_library.mk b/core/host_dalvik_static_java_library.mk
index 3ae74e42f..9e5aaa3da 100644
--- a/core/host_dalvik_static_java_library.mk
+++ b/core/host_dalvik_static_java_library.mk
@@ -19,6 +19,7 @@
 # These libraries will be compiled against libcore and not the host
 # JRE.
 #
+ifeq ($(HOST_OS),linux)
 
 USE_CORE_LIB_BOOTCLASSPATH := true
 LOCAL_JAVA_LIBRARIES += core-libart-hostdex
@@ -26,3 +27,5 @@ LOCAL_JAVA_LIBRARIES += core-libart-hostdex
 include $(BUILD_SYSTEM)/host_java_library.mk
 
 USE_CORE_LIB_BOOTCLASSPATH :=
+
+endif