1 files changed, 3 insertions, 0 deletions
diff --git a/procps/free.c b/procps/free.c
index ca753134c..47f2fc3b2 100644
--- a/procps/free.c
+++ b/procps/free.c
@@ -22,6 +22,9 @@
 //usage:       "Total:       386144       257128       129016\n"
 
 #include "libbb.h"
+#ifdef __linux__
+# include <sys/sysinfo.h>
+#endif
 
 struct globals {
 	unsigned mem_unit;