diff --git a/contrib/one-true-awk/lex.c b/contrib/one-true-awk/lex.c
index 39f5d4d305c2..1766d71690ce 100644
--- a/contrib/one-true-awk/lex.c
+++ b/contrib/one-true-awk/lex.c
@@ -550,9 +550,9 @@ int input(void)	/* get next lexical input character */
 	extern char *lexprog;
 
 	if (yysptr > yysbuf)
-		c = *--yysptr;
+		c = (uschar)*--yysptr;
 	else if (lexprog != NULL) {	/* awk '...' */
-		if ((c = *lexprog) != 0)
+		if ((c = (uschar)*lexprog) != 0)
 			lexprog++;
 	} else				/* awk -f ... */
 		c = pgetc();
diff --git a/contrib/one-true-awk/main.c b/contrib/one-true-awk/main.c
index 6e6604e0cba4..5ca7c6ce011f 100644
--- a/contrib/one-true-awk/main.c
+++ b/contrib/one-true-awk/main.c
@@ -22,7 +22,7 @@ ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
 THIS SOFTWARE.
 ****************************************************************/
 
-const char	*version = "version 20030729";
+const char	*version = "version 20030731";
 
 #define DEBUG
 #include <stdio.h>