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-rw-r--r--scripts/kconfig/menu.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index d64108bc0cf..24547fe0fe9 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -3,6 +3,7 @@
* Released under the terms of the GNU GPL v2.0.
*/
+#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>