diff --git a/kmail_export.h b/kmail_export.h
index aa6baaf95..62e85ed93 100644
--- a/kmail_export.h
+++ b/kmail_export.h
@@ -24,7 +24,7 @@
 #include <kdemacros.h>
 
 #ifndef KMAIL_EXPORT
-# if defined(MAKE_KMAILPRIVATE_LIB)
+# if defined(MAKE_KMAILPRIVATE_LIB) || defined(MAKE_KCM_KPIMIDENTITIES_LIB)
    /* We are building this library */
 #  define KMAIL_EXPORT KDE_EXPORT
 # else