diff --git a/CFString.c b/CFString.c
index 82023a9..162403a 100644
--- a/CFString.c
+++ b/CFString.c
@@ -64,7 +64,7 @@
 #define INSTRUMENT_SHARED_STRINGS 0
 #endif
 
-CF_PRIVATE const CFStringRef __kCFLocaleCollatorID;
+extern CF_PRIVATE const CFStringRef __kCFLocaleCollatorID;
 
 #if INSTRUMENT_SHARED_STRINGS
 #include <sys/stat.h> /* for umask() */
diff --git a/include/CoreFoundation/CFInternal.h b/include/CoreFoundation/CFInternal.h
index c71dafa..8e8b807 100644
--- a/include/CoreFoundation/CFInternal.h
+++ b/include/CoreFoundation/CFInternal.h
@@ -386,7 +386,7 @@ extern CFTypeRef CFMakeUncollectable(CFTypeRef cf);
 
 CF_PRIVATE void _CFRaiseMemoryException(CFStringRef reason);
 
-CF_PRIVATE Boolean __CFProphylacticAutofsAccess;
+extern CF_PRIVATE Boolean __CFProphylacticAutofsAccess;
 
 
 #if DEPLOYMENT_TARGET_MACOSX