1 files changed, 2 insertions, 0 deletions
diff --git a/ptrlist.h b/ptrlist.h
index dae0906..fbfc080 100644
--- a/ptrlist.h
+++ b/ptrlist.h
@@ -1,6 +1,8 @@
 #ifndef PTR_LIST_H
 #define PTR_LIST_H
 
+#include <stdlib.h>
+
 /*
  * Generic pointer list manipulation code. 
  *