diff --git a/tools/fs_config/fs_config_generator.py b/tools/fs_config/fs_config_generator.py
index 2cf2fd87e..c8d1dd33a 100755
--- a/tools/fs_config/fs_config_generator.py
+++ b/tools/fs_config/fs_config_generator.py
@@ -709,7 +709,7 @@ class FSConfigFileParser(object):
                 int(cap, 0)
                 tmp.append('(' + cap + ')')
             except ValueError:
-                tmp.append('(1ULL << CAP_' + cap.upper() + ')')
+                tmp.append('CAP_MASK_LONG(CAP_' + cap.upper() + ')')
 
         caps = tmp