diff --git a/tools/duk/unduck.c b/tools/duk/unduck.c
index 911febf1a..c7671845a 100644
--- a/tools/duk/unduck.c
+++ b/tools/duk/unduck.c
@@ -12,6 +12,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <ctype.h>
 
 #include "unduck.h"
diff --git a/tools/duk/unduck.sh b/tools/duk/unduck.sh
index c3de25ca7..0ae6ab7a6 100755
--- a/tools/duk/unduck.sh
+++ b/tools/duk/unduck.sh
@@ -11,9 +11,9 @@ echo "and are stereo."
 echo "N.B. This program isn't fast. Make a cup of tea or something."
 
 echo "Press ENTER when ready."
-read
+read DUMMY
 
-for FILE in *.{duk,DUK}; do
+for FILE in *.duk *.DUK; do
 	if [ ! -r "$FILE" ]; then
 		continue
 	fi