diff --git a/builtin/am.c b/builtin/am.c
index d003939bc5..8058583a20 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -1840,6 +1840,8 @@ static void am_run(struct am_state *state, int resume)
 		const char *mail = am_path(state, msgnum(state));
 		int apply_status;
 
+		reset_ident_date();
+
 		if (!file_exists(mail))
 			goto next;
 
diff --git a/cache.h b/cache.h
index 4ff196c259..1876e12b75 100644
--- a/cache.h
+++ b/cache.h
@@ -1256,6 +1256,7 @@ extern const char *ident_default_email(void);
 extern const char *git_editor(void);
 extern const char *git_pager(int stdout_is_tty);
 extern int git_ident_config(const char *, const char *, void *);
+extern void reset_ident_date(void);
 
 struct ident_split {
 	const char *name_begin;
diff --git a/ident.c b/ident.c
index 4fd82d1043..0c78df7c8f 100644
--- a/ident.c
+++ b/ident.c
@@ -186,6 +186,11 @@ static const char *ident_default_date(void)
 	return git_default_date.buf;
 }
 
+void reset_ident_date(void)
+{
+	strbuf_reset(&git_default_date);
+}
+
 static int crud(unsigned char c)
 {
 	return  c <= 32  ||