diff --git a/cmake/libpinmame/CMakeLists.txt b/cmake/libpinmame/CMakeLists.txt
index a2dfd1a..119e3ec 100644
--- a/cmake/libpinmame/CMakeLists.txt
+++ b/cmake/libpinmame/CMakeLists.txt
@@ -745,6 +745,7 @@ set(PINMAME_INCLUDE_DIRS
    src/cpu/m68000/generated_by_m68kmake
    src/unix
    src/unix/sysdep
+   ext/zlib
 )
 
 
@@ -752,7 +753,6 @@ if(PLATFORM STREQUAL "win" OR PLATFORM STREQUAL "win-mingw")
    list(APPEND PINMAME_INCLUDE_DIRS
       src/vc
       src/windows
-      ext/zlib
    )
 endif()