diff --git a/lib/hal/HalStorage.cpp b/lib/hal/HalStorage.cpp
index 825018e1..82b6e03c 100644
--- a/lib/hal/HalStorage.cpp
+++ b/lib/hal/HalStorage.cpp
@@ -60,12 +60,12 @@ uint64_t HalStorage::sdTotalBytes() const {
   return SDCard.sdTotalBytes();
 }
 
-uint64_t HalStorage::sdUsedBytes() const {
+uint64_t HalStorage::sdUsedBytes() {
   StorageLock lock;
   return SDCard.sdUsedBytes();
 }
 
-uint64_t HalStorage::sdFreeBytes() const {
+uint64_t HalStorage::sdFreeBytes() {
   uint64_t total = sdTotalBytes();
   uint64_t used = sdUsedBytes();
   if (total <= used) return 0;
diff --git a/lib/hal/HalStorage.h b/lib/hal/HalStorage.h
index 65e0a071..d9bee706 100644
--- a/lib/hal/HalStorage.h
+++ b/lib/hal/HalStorage.h
@@ -46,8 +46,8 @@ class HalStorage {
   bool removeDir(const char* path);
 
   uint64_t sdTotalBytes() const;
-  uint64_t sdUsedBytes() const;
-  uint64_t sdFreeBytes() const;
+  uint64_t sdUsedBytes();
+  uint64_t sdFreeBytes();
 
   static HalStorage& getInstance() { return instance; }