diff --git a/ports/libbf/CONTROL b/ports/libbf/CONTROL
index 3b51a52e1e..35ee0fbcc1 100644
--- a/ports/libbf/CONTROL
+++ b/ports/libbf/CONTROL
@@ -1,3 +1,3 @@
 Source: libbf
-Version: 1.0.0
+Version: 1.0.0-1
 Description: Bloom filters for C++11.
\ No newline at end of file
diff --git a/ports/libbf/portfile.cmake b/ports/libbf/portfile.cmake
index b339e94cca..c7a9ef42e8 100644
--- a/ports/libbf/portfile.cmake
+++ b/ports/libbf/portfile.cmake
@@ -1,4 +1,4 @@
-if (VCPKG_CMAKE_SYSTEM_NAME STREQUAL "" OR VCPKG_CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
+if (NOT VCPKG_CMAKE_SYSTEM_NAME OR VCPKG_CMAKE_SYSTEM_NAME STREQUAL "Windows" OR VCPKG_CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
     message(FATAL_ERROR "libbf does not support MSVC")
 endif()