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-rw-r--r--scd/apdu.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/scd/apdu.c b/scd/apdu.c
index 28d32ad2c..7898452c4 100644
--- a/scd/apdu.c
+++ b/scd/apdu.c
@@ -25,6 +25,7 @@
#include <stdlib.h>
#include <string.h>
#include <assert.h>
+#include <signal.h>
#ifdef USE_GNU_PTH
# include <pth.h>
# include <unistd.h>