diff --git a/apps/settings/sub_menu/about_controller.cpp b/apps/settings/sub_menu/about_controller.cpp
index e2fe3f5a6..d5f884aa8 100644
--- a/apps/settings/sub_menu/about_controller.cpp
+++ b/apps/settings/sub_menu/about_controller.cpp
@@ -156,7 +156,7 @@ void AboutController::willDisplayCellForIndex(HighlightCell * cell, int index) {
     MessageTableCellWithBuffer * myCell = (MessageTableCellWithBuffer *)cell;
     static const char * mpVersion = MICROPY_VERSION_STRING;
     static const char * messages[] = {
-      Ion::username(),
+      (const char*) Ion::username(),
       Ion::softwareVersion(),
       Ion::omegaVersion(),
       mpVersion,
diff --git a/ion/include/ion.h b/ion/include/ion.h
index 78110f9f0..fb6bac017 100644
--- a/ion/include/ion.h
+++ b/ion/include/ion.h
@@ -32,7 +32,7 @@ void ion_main(int argc, const char * const argv[]);
 namespace Ion {
 
 const char * serialNumber();
-const char * username();
+const volatile char * username();
 const char * softwareVersion();
 const char * omegaVersion();
 const char * patchLevel();
diff --git a/ion/src/shared/platform_info.cpp b/ion/src/shared/platform_info.cpp
index d4249ebbc..cdf676a0c 100644
--- a/ion/src/shared/platform_info.cpp
+++ b/ion/src/shared/platform_info.cpp
@@ -57,7 +57,7 @@ public:
     assert(m_ohm_footer == OmegaMagic);
     return m_omegaVersion;
   }
-  const char * username() const {
+  const volatile char * username() const volatile {
     assert(m_storageAddress != nullptr);
     assert(m_storageSize != 0);
     assert(m_header == Magic);
@@ -86,11 +86,11 @@ private:
   uint32_t m_footer;
   uint32_t m_ohm_header;
   const char m_omegaVersion[16];
-  const char m_username[16];
+  const volatile char m_username[16];
   uint32_t m_ohm_footer;
 };
 
-constexpr PlatformInfo HEADER_SECTION platform_infos;
+const PlatformInfo HEADER_SECTION platform_infos;
 
 const char * Ion::softwareVersion() {
   return platform_infos.version();
@@ -100,7 +100,7 @@ const char * Ion::omegaVersion() {
   return platform_infos.omegaVersion();
 }
 
-const char * Ion::username() {
+const volatile char * Ion::username() {
   return platform_infos.username();
 }