diff --git a/i3bar/include/common.h b/i3bar/include/common.h
index dcb0bac3..e885ddcd 100644
--- a/i3bar/include/common.h
+++ b/i3bar/include/common.h
@@ -13,7 +13,6 @@ typedef struct rect_t rect;
 typedef int bool;
 
 struct ev_loop* main_loop;
-pid_t           child_pid;
 char            *statusline;
 
 struct rect_t {
diff --git a/i3bar/src/child.c b/i3bar/src/child.c
index a4c33bcd..1ed429c0 100644
--- a/i3bar/src/child.c
+++ b/i3bar/src/child.c
@@ -20,6 +20,9 @@
 
 #include "common.h"
 
+/* Global variables for child_*() */
+pid_t child_pid;
+
 /* stdin- and sigchild-watchers */
 ev_io    *stdin_io;
 ev_child *child_sig;