diff --git a/soltools/cpp/_nlist.c b/soltools/cpp/_nlist.c
index ad9ce9ae5a63..9144f2b7e15e 100644
--- a/soltools/cpp/_nlist.c
+++ b/soltools/cpp/_nlist.c
@@ -3,7 +3,7 @@
 #include <string.h>
 #include "cpp.h"
 
-extern int getopt(int, char *const *, const char *);
+extern int stgetopt(int, char *const *, const char *);
 extern char *optarg;
 extern int optind;
 extern int Cplusplus;