diff --git a/i3bar/src/ipc.c b/i3bar/src/ipc.c
index 7a657338..56fe2798 100644
--- a/i3bar/src/ipc.c
+++ b/i3bar/src/ipc.c
@@ -309,7 +309,7 @@ int i3_send_msg(uint32_t type, const char *payload) {
     char *buffer = smalloc(to_write);
     char *walk = buffer;
 
-    strncpy(buffer, I3_IPC_MAGIC, strlen(I3_IPC_MAGIC));
+    memcpy(buffer, I3_IPC_MAGIC, strlen(I3_IPC_MAGIC));
     walk += strlen(I3_IPC_MAGIC);
     memcpy(walk, &len, sizeof(uint32_t));
     walk += sizeof(uint32_t);
diff --git a/i3bar/src/xcb.c b/i3bar/src/xcb.c
index 800c05d4..ae6c0abc 100644
--- a/i3bar/src/xcb.c
+++ b/i3bar/src/xcb.c
@@ -604,7 +604,7 @@ void handle_button(xcb_button_press_event_t *event) {
 
     const size_t len = namelen + strlen("workspace \"\"") + 1;
     char *buffer = scalloc(len + num_quotes, 1);
-    strncpy(buffer, "workspace \"", strlen("workspace \""));
+    memcpy(buffer, "workspace \"", strlen("workspace \""));
     size_t inpos, outpos;
     for (inpos = 0, outpos = strlen("workspace \"");
          inpos < namelen;