diff --git a/src/makeBaseExt/top/exampleExt/caExample.c b/src/makeBaseExt/top/exampleExt/caExample.c
index 3df548452..cc342e237 100644
--- a/src/makeBaseExt/top/exampleExt/caExample.c
+++ b/src/makeBaseExt/top/exampleExt/caExample.c
@@ -6,7 +6,7 @@
 
 #include "cadef.h"
 
-main(int argc,char **argv)
+int main(int argc,char **argv)
 {
     double	data;
     chid	mychid;