diff --git a/nx/source/services/fs.c b/nx/source/services/fs.c
index ebf4a37b..fbfed5e5 100644
--- a/nx/source/services/fs.c
+++ b/nx/source/services/fs.c
@@ -432,7 +432,7 @@ Result fsOpenFileSystem(FsFileSystem* out, u64 titleId, FsFileSystemType fsType)
 
 Result fsOpenFileSystemWithId(FsFileSystem* out, u64 titleId, FsFileSystemType fsType, const char* contentPath) {
     char sendStr[FS_MAX_PATH];
-    strncpy(sendStr, contentPath, sizeof(sendStr));
+    strncpy(sendStr, contentPath, sizeof(sendStr)-1);
     sendStr[sizeof(sendStr)-1] = 0;
 
     IpcCommand c;