1 files changed, 1 insertions, 1 deletions

diff --git a/libbb/procps.c b/libbb/procps.c
index fbb05532a..c15b3e0a4 100644
--- a/libbb/procps.c
+++ b/libbb/procps.c
@@ -16,7 +16,7 @@
 
 #include "libbb.h"
 
-#ifndef
+#ifndef PAGE_MASK
 #define PAGE_MASK               (~((getpagesize())-1))
 #endif