diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index c7059857e4..66f3e6f673 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -43,6 +43,9 @@
 #include <net/ethernet.h>
 #endif
 #ifdef CONFIG_SOLARIS
+#ifdef CONFIG_GETLOADAVG
+#include <sys/loadavg.h>
+#endif
 #include <sys/sockio.h>
 #endif
 #endif