diff --git a/bb.c b/bb.c
index 95850ef..a394d00 100644
--- a/bb.c
+++ b/bb.c
@@ -25,6 +25,7 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <aalib.h>
+#include <time.h>
 #include "bb.h"
 
 int finish_stuff, starttime, endtime;
diff --git a/messager.c b/messager.c
index 7f780a1..e64bff3 100644
--- a/messager.c
+++ b/messager.c
@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <string.h>
 #include "bb.h"
 
diff --git a/scene5.c b/scene5.c
index c491034..c3267aa 100644
--- a/scene5.c
+++ b/scene5.c
@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <string.h>
 #include <math.h>
 #include "bb.h"
diff --git a/scene8.c b/scene8.c
index b1d25c9..8f1667b 100644
--- a/scene8.c
+++ b/scene8.c
@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <math.h>
 #include "bb.h"
 #define STATE1 (TIME-starttime1)
diff --git a/textform.c b/textform.c
index 3a2bf69..5deee84 100644
--- a/textform.c
+++ b/textform.c
@@ -2,6 +2,7 @@
 #include <string.h>
 #include <aalib.h>
 #include "bb.h"
+#include <stdlib.h>
 #define MAXLINES 10000
 static char *text = "#cWell we've reached the end of this demo. But #bnot#n the #bREAL END#n because\n\n"
 "#bAA PROJECT#n is here. \n\n"
diff --git a/timers.c b/timers.c
index 0e0de8b..cd981c0 100644
--- a/timers.c
+++ b/timers.c
@@ -21,6 +21,7 @@
  *
  * All ugly architecture depended timing code is separated into this file..
  */
+#include <stdlib.h>
 #ifdef _plan9_
 #include <u.h>
 #include <stdio.h>
diff --git a/uncompfn.c b/uncompfn.c
index 881f9fb..84d4bf8 100644
--- a/uncompfn.c
+++ b/uncompfn.c
@@ -20,7 +20,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.
  * 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-
+#include <stdlib.h>
 #include <aalib.h>
 #include "bb.h"