1 files changed, 1 insertions, 1 deletions
diff --git a/system.h b/system.h
index 1a26fa379..87455f78b 100644
--- a/system.h
+++ b/system.h
@@ -448,7 +448,7 @@ extern void muntrace (void)
   }
 #endif
 /*@unchecked@*/
-const char *__progname;
+extern const char *__progname;
 
 #if HAVE_NETDB_H
 #include <netdb.h>