diff --git a/Kernel/FileSystem/Ext2FileSystem.cpp b/Kernel/FileSystem/Ext2FileSystem.cpp
index 19d6874adf..f54606da35 100644
--- a/Kernel/FileSystem/Ext2FileSystem.cpp
+++ b/Kernel/FileSystem/Ext2FileSystem.cpp
@@ -1221,7 +1221,7 @@ void Ext2FSInode::populate_lookup_cache() const
     m_lookup_cache = move(children);
 }
 
-InodeIdentifier Ext2FSInode::lookup(const String& name)
+InodeIdentifier Ext2FSInode::lookup(StringView name)
 {
     ASSERT(is_directory());
     populate_lookup_cache();
diff --git a/Kernel/FileSystem/Ext2FileSystem.h b/Kernel/FileSystem/Ext2FileSystem.h
index 17654f1e24..1d8aa0ebc0 100644
--- a/Kernel/FileSystem/Ext2FileSystem.h
+++ b/Kernel/FileSystem/Ext2FileSystem.h
@@ -28,7 +28,7 @@ private:
     virtual ssize_t read_bytes(off_t, ssize_t, byte* buffer, FileDescriptor*) const override;
     virtual InodeMetadata metadata() const override;
     virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const override;
-    virtual InodeIdentifier lookup(const String& name) override;
+    virtual InodeIdentifier lookup(StringView name) override;
     virtual void flush_metadata() override;
     virtual ssize_t write_bytes(off_t, ssize_t, const byte* data, FileDescriptor*) override;
     virtual KResult add_child(InodeIdentifier child_id, const String& name, mode_t) override;
diff --git a/Kernel/FileSystem/Inode.h b/Kernel/FileSystem/Inode.h
index 76355218bf..8010597ccb 100644
--- a/Kernel/FileSystem/Inode.h
+++ b/Kernel/FileSystem/Inode.h
@@ -41,7 +41,7 @@ public:
 
     virtual ssize_t read_bytes(off_t, ssize_t, byte* buffer, FileDescriptor*) const = 0;
     virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const = 0;
-    virtual InodeIdentifier lookup(const String& name) = 0;
+    virtual InodeIdentifier lookup(StringView name) = 0;
     virtual ssize_t write_bytes(off_t, ssize_t, const byte* data, FileDescriptor*) = 0;
     virtual KResult add_child(InodeIdentifier child_id, const String& name, mode_t) = 0;
     virtual KResult remove_child(const String& name) = 0;
diff --git a/Kernel/FileSystem/ProcFS.cpp b/Kernel/FileSystem/ProcFS.cpp
index c704d33374..b09b89e163 100644
--- a/Kernel/FileSystem/ProcFS.cpp
+++ b/Kernel/FileSystem/ProcFS.cpp
@@ -957,7 +957,7 @@ bool ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)
     return true;
 }
 
-InodeIdentifier ProcFSInode::lookup(const String& name)
+InodeIdentifier ProcFSInode::lookup(StringView name)
 {
     ASSERT(is_directory());
     if (name == ".")
diff --git a/Kernel/FileSystem/ProcFS.h b/Kernel/FileSystem/ProcFS.h
index a507ba4ba0..1ba73615d6 100644
--- a/Kernel/FileSystem/ProcFS.h
+++ b/Kernel/FileSystem/ProcFS.h
@@ -83,7 +83,7 @@ private:
     virtual ssize_t read_bytes(off_t, ssize_t, byte* buffer, FileDescriptor*) const override;
     virtual InodeMetadata metadata() const override;
     virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const override;
-    virtual InodeIdentifier lookup(const String& name) override;
+    virtual InodeIdentifier lookup(StringView name) override;
     virtual void flush_metadata() override;
     virtual ssize_t write_bytes(off_t, ssize_t, const byte* buffer, FileDescriptor*) override;
     virtual KResult add_child(InodeIdentifier child_id, const String& name, mode_t) override;
diff --git a/Kernel/FileSystem/SyntheticFileSystem.cpp b/Kernel/FileSystem/SyntheticFileSystem.cpp
index 12a8e84186..9dc2711319 100644
--- a/Kernel/FileSystem/SyntheticFileSystem.cpp
+++ b/Kernel/FileSystem/SyntheticFileSystem.cpp
@@ -231,7 +231,7 @@ bool SynthFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&
     return true;
 }
 
-InodeIdentifier SynthFSInode::lookup(const String& name)
+InodeIdentifier SynthFSInode::lookup(StringView name)
 {
     LOCKER(m_lock);
     ASSERT(is_directory());
diff --git a/Kernel/FileSystem/SyntheticFileSystem.h b/Kernel/FileSystem/SyntheticFileSystem.h
index 844982a726..c5bb164363 100644
--- a/Kernel/FileSystem/SyntheticFileSystem.h
+++ b/Kernel/FileSystem/SyntheticFileSystem.h
@@ -60,7 +60,7 @@ private:
     virtual ssize_t read_bytes(off_t, ssize_t, byte* buffer, FileDescriptor*) const override;
     virtual InodeMetadata metadata() const override;
     virtual bool traverse_as_directory(Function<bool(const FS::DirectoryEntry&)>) const override;
-    virtual InodeIdentifier lookup(const String& name) override;
+    virtual InodeIdentifier lookup(StringView name) override;
     virtual void flush_metadata() override;
     virtual ssize_t write_bytes(off_t, ssize_t, const byte* buffer, FileDescriptor*) override;
     virtual KResult add_child(InodeIdentifier child_id, const String& name, mode_t) override;