diff --git a/stratosphere/fs_mitm/source/fs_shim.c b/stratosphere/fs_mitm/source/fs_shim.c
index 99a79fa2b..ebfae7ed6 100644
--- a/stratosphere/fs_mitm/source/fs_shim.c
+++ b/stratosphere/fs_mitm/source/fs_shim.c
@@ -235,39 +235,6 @@ Result fsFileOperateRange(FsFile* f, u32 op_id, u64 off, u64 len, FsRangeInfo *o
 }
 
 /* Missing FS Storage commands. */
-Result fsStorageGetSize(FsStorage* s, u64* out) {
-    IpcCommand c;
-    ipcInitialize(&c);
-
-    struct {
-        u64 magic;
-        u64 cmd_id;
-    } *raw;
-
-    raw = ipcPrepareHeader(&c, sizeof(*raw));
-
-    raw->magic = SFCI_MAGIC;
-    raw->cmd_id = 4;
-
-    Result rc = serviceIpcDispatch(&s->s);
-
-    if (R_SUCCEEDED(rc)) {
-        IpcParsedCommand r;
-        ipcParse(&r);
-
-        struct {
-            u64 magic;
-            u64 result;
-            u64 size;
-        } *resp = r.Raw;
-
-        rc = resp->result;
-        if (R_SUCCEEDED(rc) && out) *out = resp->size;
-    }
-
-    return rc;
-}
-
 Result fsStorageOperateRange(FsStorage* s, u32 op_id, u64 off, u64 len, FsRangeInfo *out) {
     IpcCommand c;
     ipcInitialize(&c);
diff --git a/stratosphere/fs_mitm/source/fs_shim.h b/stratosphere/fs_mitm/source/fs_shim.h
index ce128729f..9030078e7 100644
--- a/stratosphere/fs_mitm/source/fs_shim.h
+++ b/stratosphere/fs_mitm/source/fs_shim.h
@@ -29,7 +29,6 @@ Result fsOpenDataStorageByDataIdFromDomain(Service* s, FsStorageId storage_id, u
 Result fsFileOperateRange(FsFile* f, u32 op_id, u64 off, u64 len, FsRangeInfo *out);
 
 /* Missing FS Storage commands. */
-Result fsStorageGetSize(FsStorage* s, u64* out);
 Result fsStorageOperateRange(FsStorage* s, u32 op_id, u64 off, u64 len, FsRangeInfo *out);
 
 #ifdef __cplusplus