diff --git a/src/xspice/cmpp/ifs_yacc.y b/src/xspice/cmpp/ifs_yacc.y
index 03767a362..0276be38b 100755
--- a/src/xspice/cmpp/ifs_yacc.y
+++ b/src/xspice/cmpp/ifs_yacc.y
@@ -43,6 +43,7 @@ NON-STANDARD FEATURES
 ============================================================================*/
 
 #include <assert.h>
+#include <stdlib.h>
 #include "ifs_yacc.h"
 
 extern int yylineno;
diff --git a/src/xspice/cmpp/pp_lst.c b/src/xspice/cmpp/pp_lst.c
index 69a9b091c..afe183951 100755
--- a/src/xspice/cmpp/pp_lst.c
+++ b/src/xspice/cmpp/pp_lst.c
@@ -50,11 +50,9 @@ NON-STANDARD FEATURES
 #include  "cmpp.h"
 #include  <ctype.h>
 #include  <string.h>
+#include  <stdlib.h>
 
 
-void    *malloc(unsigned size);
-void    *realloc(void *ptr, unsigned size);
-
 /* *********************************************************************** */
 
 /*