diff --git a/src/libexim-encrypt-dlfunc.c b/src/libexim-encrypt-dlfunc.c
index 98eb8c3..b8329f2 100644
--- a/src/libexim-encrypt-dlfunc.c
+++ b/src/libexim-encrypt-dlfunc.c
@@ -26,11 +26,11 @@
  */
 
 #if LOCAL_SCAN_VERSION < 3
-#define store_get_untainted(size) store_get(size)
-#define store_get_tainted(size) store_get(size)
+#define store_get_untainted(size) (store_get(size))
+#define store_get_tainted(size) (store_get(size))
 #elif LOCAL_SCAN_VERSION >= 3
-#define store_get_untainted(size) store_get(size, FALSE)
-#define store_get_tainted(size) store_get(size, TRUE)
+#define store_get_untainted(size) (store_get(size, FALSE))
+#define store_get_tainted(size) (store_get(size, TRUE))
 #else
 #error "exim4 local version"
 #endif