diff --git a/src/syncterm/ooii.c b/src/syncterm/ooii.c
index 4bed22d04d11fbb2084ac58ad790f8118db480d3..e927bc7d2463b42d10005cbde9618a7dfc982b8f 100644
--- a/src/syncterm/ooii.c
+++ b/src/syncterm/ooii.c
@@ -981,7 +981,7 @@ static int readSmallMenu(unsigned char *codeStr) {
 	return(codeStr-origCodeStr);;
 }
 
-static void checkStamp(int xx,int yy,char stampStr[20]) {  // used w/ incomingCheck
+static void checkStamp(int xx,int yy,char *stampStr) {  // used w/ incomingCheck
 	term_gotoxy(xx+1, yy+1);
 	term_setattr(LIGHTCYAN);
 	cterm_write(cterm, stampStr, -1, NULL, 0, NULL);