diff --git a/include/plist/plist.h b/include/plist/plist.h
index 47eda513..9df379ab 100644
--- a/include/plist/plist.h
+++ b/include/plist/plist.h
@@ -78,17 +78,13 @@ extern "C"
 #ifdef LIBPLIST_STATIC
   #define PLIST_API
 #elif defined(_WIN32)
-  #ifdef DLL_EXPORT
+  #ifdef PLIST_EXPORT
     #define PLIST_API __declspec(dllexport)
   #else
     #define PLIST_API __declspec(dllimport)
   #endif
 #else
-  #if __GNUC__ >= 4
-    #define PLIST_API __attribute__((visibility("default")))
-  #else
-    #define PLIST_API
-  #endif
+  #define PLIST_API __attribute__((visibility("default")))
 #endif
 
 #include <sys/types.h>