diff --git a/debian/patches/0001-convert.c-Use-safe-buffer-size-and-snprintf.patch b/debian/patches/0001-convert.c-Use-safe-buffer-size-and-snprintf.patch
deleted file mode 100644
index 55d0ca7..0000000
--- a/debian/patches/0001-convert.c-Use-safe-buffer-size-and-snprintf.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From: Willi Mann <willi@debian.org>
-Date: Sat, 31 Dec 2016 14:43:10 +0100
-Subject: convert.c: Use safe buffer size and snprintf
-
-cmd_expand, cmd_emboss, and cmd_engrave print an integer to a stack buffer.
-Unfortunately, the previous buffer size of 10 is to small (e.g., to store -1 *
-10^9), such that a buffer overflow could be provoked. This patch increases the
-buffer size to 12 and switches to snprintf.
-
-Bug-Debian: https://bugs.debian.org/849705
----
- src/convert.c | 12 ++++++------
- 1 file changed, 6 insertions(+), 6 deletions(-)
-
-diff --git a/src/convert.c b/src/convert.c
-index c76d7d6..5294743 100644
---- a/src/convert.c
-+++ b/src/convert.c
-@@ -1373,9 +1373,9 @@ cmd_ftech (Word *w, int align, char has_param, int param) {
- 
- static int 
- cmd_expand (Word *w, int align, char has_param, int param) {
--	char str[10];
-+	char str[12];
- 	if (has_param) {
--		sprintf(str, "%d", param/4);
-+		snprintf(str, 12, "%d", param/4);
- 		if (!param) 
- 			attr_pop(ATTR_EXPAND);
- 		else 
-@@ -1394,7 +1394,7 @@ cmd_expand (Word *w, int align, char has_param, int param) {
- 
- static int 
- cmd_emboss (Word *w, int align, char has_param, int param) {
--	char str[10];
-+	char str[12];
- 	if (has_param && !param)
- #ifdef SUPPORT_UNNESTED
- 		attr_find_pop(ATTR_EMBOSS);
-@@ -1403,7 +1403,7 @@ cmd_emboss (Word *w, int align, char has_param, int param) {
- #endif
- 	else
- 	{
--		sprintf(str, "%d", param);
-+		snprintf(str, 12, "%d", param);
- 		attr_push(ATTR_EMBOSS, str);
- 	}
- 	return FALSE;
-@@ -1419,12 +1419,12 @@ cmd_emboss (Word *w, int align, char has_param, int param) {
- 
- static int 
- cmd_engrave (Word *w, int align, char has_param, int param) {
--	char str[10];
-+	char str[12];
- 	if (has_param && !param) 
- 		attr_pop(ATTR_ENGRAVE);
- 	else
- 	{
--		sprintf(str, "%d", param);
-+		snprintf(str, 12, "%d", param);
- 		attr_push(ATTR_ENGRAVE, str);
- 	}
- 	return FALSE;
diff --git a/debian/patches/series b/debian/patches/series
deleted file mode 100644
index aca486d..0000000
--- a/debian/patches/series
+++ /dev/null
@@ -1 +0,0 @@
-0001-convert.c-Use-safe-buffer-size-and-snprintf.patch