diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index de52e8c1..e6fa09a6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -37,7 +37,8 @@ jobs:
         run: |
           ./configure --prefix=/usr --exec-prefix= --sysconfdir=/etc --localstatedir=/var \
                       --enable-x11-common-plugin --enable-testserv-plugin --with-watchdog \
-                      --with-keventd
+                      --with-keventd \
+                      CFLAGS="-fsanitize=address -ggdb"
           make -j3 clean
           make -j3 V=1
       - name: Install to /tmp
diff --git a/check.sh b/check.sh
index 9b153629..56c32bb2 100755
--- a/check.sh
+++ b/check.sh
@@ -3,5 +3,6 @@
 
 make distclean
 ./configure --prefix=/usr --exec-prefix= --sysconfdir=/etc --localstatedir=/var \
-	    --enable-x11-common-plugin --with-watchdog --with-keventd
+	    --enable-x11-common-plugin --with-watchdog --with-keventd \
+	    CFLAGS='-fsanitize=address -ggdb'
 make -j17 clean check
diff --git a/configure.ac b/configure.ac
index b5e9bbe2..5e591fd1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([Finit], [4.12], [https://github.com/troglobit/finit/issues],
+AC_INIT([Finit], [4.13-pre], [https://github.com/troglobit/finit/issues],
 	[finit], [https://troglobit.com/projects/finit/])
 AC_CONFIG_AUX_DIR(aux)
 AM_INIT_AUTOMAKE([1.11 foreign dist-xz subdir-objects])
diff --git a/src/initctl.c b/src/initctl.c
index 726fdaa9..d1698fc4 100644
--- a/src/initctl.c
+++ b/src/initctl.c
@@ -767,27 +767,25 @@ static int plugins_list(char *arg)
  */
 char *runlevel_string(int currlevel, int levels)
 {
-	static char lvl[21];
+	static char lvl[32];
 	int i = INIT_LEVEL;
-	int pos = 1;
 
-	memset(lvl, 0, sizeof(lvl));
-	lvl[0] = '[';
+	strlcpy(lvl, "[", sizeof(lvl));
 
 	do {
 		if (ISSET(levels, i)) {
-			if (!plain && currlevel == i)
-				pos = strlcat(lvl, "\e[1m", sizeof(lvl));
-
-			if (i == INIT_LEVEL)
-				lvl[pos++] = 'S';
-			else
-				lvl[pos++] = '0' + i;
+			char l[2] = { '0' + i, 0 };
 
 			if (!plain && currlevel == i)
-				pos = strlcat(lvl, "\e[0m", sizeof(lvl));
+				strlcat(lvl, "\e[1m", sizeof(lvl));
+
+			strlcat(lvl, i == INIT_LEVEL ? "S" : l, sizeof(lvl));
+
+
+			if (!plain && currlevel == i)
+				strlcat(lvl, "\e[0m", sizeof(lvl));
 		} else {
-			lvl[pos++] = '-';
+			strlcat(lvl, "-", sizeof(lvl));
 		}
 
 		/* XXX: ugly hack to get order right: S0123456789 */
@@ -798,8 +796,7 @@ char *runlevel_string(int currlevel, int levels)
 	} while (i < INIT_LEVEL);
 
 
-	lvl[pos++] = ']';
-	lvl[pos]   = 0;
+	strlcat(lvl, "]", sizeof(lvl));
 
 	return lvl;
 }