diff --git a/Kernel/FileSystem/FIFO.cpp b/Kernel/FileSystem/FIFO.cpp
index ab009fd875..748d0f86a6 100644
--- a/Kernel/FileSystem/FIFO.cpp
+++ b/Kernel/FileSystem/FIFO.cpp
@@ -163,7 +163,7 @@ KResultOr<size_t> FIFO::write(FileDescription&, u64, const UserOrKernelBuffer& b
 
 String FIFO::absolute_path(const FileDescription&) const
 {
-    return String::format("fifo:%u", m_fifo_id);
+    return String::formatted("fifo:{}", m_fifo_id);
 }
 
 KResult FIFO::stat(::stat& st) const
diff --git a/Kernel/Net/IPv4SocketTuple.h b/Kernel/Net/IPv4SocketTuple.h
index 9ad8e5a458..048708fb29 100644
--- a/Kernel/Net/IPv4SocketTuple.h
+++ b/Kernel/Net/IPv4SocketTuple.h
@@ -53,11 +53,11 @@ public:
 
     String to_string() const
     {
-        return String::format(
-            "%s:%d -> %s:%d",
-            m_local_address.to_string().characters(),
+        return String::formatted(
+            "{}:{} -> {}:{}",
+            m_local_address,
             m_local_port,
-            m_peer_address.to_string().characters(),
+            m_peer_address,
             m_peer_port);
     }
 
diff --git a/Kernel/Net/NE2000NetworkAdapter.cpp b/Kernel/Net/NE2000NetworkAdapter.cpp
index 0845da332d..c84c9f6639 100644
--- a/Kernel/Net/NE2000NetworkAdapter.cpp
+++ b/Kernel/Net/NE2000NetworkAdapter.cpp
@@ -210,7 +210,7 @@ UNMAP_AFTER_INIT NE2000NetworkAdapter::~NE2000NetworkAdapter()
 void NE2000NetworkAdapter::handle_irq(const RegisterState&)
 {
     u8 status = in8(REG_RW_INTERRUPTSTATUS);
-    dbgln_if(NE2000_DEBUG, "NE2000NetworkAdapter: Got interrupt, status=0x{}", String::format("%02x", status));
+    dbgln_if(NE2000_DEBUG, "NE2000NetworkAdapter: Got interrupt, status={:#02x}", status);
 
     if (status & BIT_INTERRUPTMASK_PRX) {
         dbgln_if(NE2000_DEBUG, "NE2000NetworkAdapter: Interrupt for packet received");
diff --git a/Kernel/Scheduler.cpp b/Kernel/Scheduler.cpp
index 99eb042295..2ea7d03a63 100644
--- a/Kernel/Scheduler.cpp
+++ b/Kernel/Scheduler.cpp
@@ -501,7 +501,7 @@ UNMAP_AFTER_INIT Thread* Scheduler::create_ap_idle_thread(u32 cpu)
     VERIFY(Processor::id() == 0);
 
     VERIFY(s_colonel_process);
-    Thread* idle_thread = s_colonel_process->create_kernel_thread(idle_loop, nullptr, THREAD_PRIORITY_MIN, String::format("idle thread #%u", cpu), 1 << cpu, false);
+    Thread* idle_thread = s_colonel_process->create_kernel_thread(idle_loop, nullptr, THREAD_PRIORITY_MIN, String::formatted("idle thread #{}", cpu), 1 << cpu, false);
     VERIFY(idle_thread);
     return idle_thread;
 }