diff --git a/include/villas/advio.h b/include/villas/advio.h
index a1741a9f9..afbf3b14b 100644
--- a/include/villas/advio.h
+++ b/include/villas/advio.h
@@ -39,7 +39,7 @@ struct advio {
 
 	unsigned char hash[SHA_DIGEST_LENGTH];
 
-	char mode[2];
+	char mode[3];
 	char *uri;
 };
 
diff --git a/lib/advio.c b/lib/advio.c
index 9a9d2f738..872f6176c 100644
--- a/lib/advio.c
+++ b/lib/advio.c
@@ -193,7 +193,7 @@ AFILE * afopen(const char *uri, const char *mode)
 
 	AFILE *af = alloc(sizeof(AFILE));
 
-	strncpy(af->mode, mode, sizeof(af->mode));
+	snprintf(af->mode, sizeof(af->mode), "%s", mode);
 
 	sep = strstr(uri, "://");
 	if (sep) {
diff --git a/lib/kernel/kernel.c b/lib/kernel/kernel.c
index e1421c95c..27dcfdcbd 100644
--- a/lib/kernel/kernel.c
+++ b/lib/kernel/kernel.c
@@ -151,7 +151,7 @@ int kernel_get_cmdline_param(const char *param, char *buf, size_t len)
 
 			if (strcmp(param, key) == 0) {
 				if (ret >= 2 && buf)
-					strncpy(buf, value, len);
+					snprintf(buf, len, "%s", value);
 
 				return 0; /* found */
 			}
diff --git a/lib/nodes/socket.c b/lib/nodes/socket.c
index 584762860..15e0412f2 100644
--- a/lib/nodes/socket.c
+++ b/lib/nodes/socket.c
@@ -626,7 +626,10 @@ int socket_parse_addr(const char *addr, struct sockaddr *saddr, enum socket_laye
 	if (layer == SOCKET_LAYER_UNIX) { /* Format: "/path/to/socket" */
 		sa->sun.sun_family = AF_UNIX;
 
-		strncpy(sa->sun.sun_path, addr, sizeof(sa->sun.sun_path));
+		if (strlen(addr) > sizeof(sa->sun.sun_path)-1)
+			error("Length of unix socket path is too long!");
+
+		memcpy(sa->sun.sun_path, addr, strlen(sa->sun.sun_path)+1);
 
 		ret = 0;
 	}
diff --git a/lib/nodes/zeromq.c b/lib/nodes/zeromq.c
index c0a6e63dd..fc81934a2 100644
--- a/lib/nodes/zeromq.c
+++ b/lib/nodes/zeromq.c
@@ -174,8 +174,8 @@ int zeromq_parse(struct node *n, json_t *cfg)
 		if (strlen(public_key) != 40)
 			error("Setting 'curve.public_key' of node %s must be a Z85 encoded CurveZMQ key", node_name(n));
 
-		strncpy(z->curve.server.public_key, public_key, 41);
-		strncpy(z->curve.server.secret_key, secret_key, 41);
+		memcpy(z->curve.server.public_key, public_key, 41);
+		memcpy(z->curve.server.secret_key, secret_key, 41);
 	}
 
 	/** @todo We should fix this. Its mostly done. */
diff --git a/lib/super_node.c b/lib/super_node.c
index 3c14d45e7..eb08a7515 100644
--- a/lib/super_node.c
+++ b/lib/super_node.c
@@ -201,8 +201,10 @@ int super_node_parse_json(struct super_node *sn, json_t *cfg)
 	if (ret)
 		jerror(&err, "Failed to parse global configuration");
 
-	if (name)
-		strncpy(sn->name, name, 128);
+	if (name) {
+		sn->name = realloc(sn->name, strlen(name)+1);
+		sprintf(sn->name, "%s", name);
+	}
 
 #ifdef WITH_WEB
 	if (json_web)