diff --git a/src/libCom/misc/cantProceed.h b/src/libCom/misc/cantProceed.h
index 1d6290d92..82dcd70f3 100644
--- a/src/libCom/misc/cantProceed.h
+++ b/src/libCom/misc/cantProceed.h
@@ -1,6 +1,8 @@
 #ifndef INCcantProceedh
 #define INCcantProceedh
 
+#include <stdlib.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif