diff --git a/src/FlashStorage.cpp b/src/FlashStorage.cpp
index cb7dcf6..44b215c 100644
--- a/src/FlashStorage.cpp
+++ b/src/FlashStorage.cpp
@@ -95,8 +95,13 @@ void FlashClass::write(const volatile void *flash_ptr, const void *data, uint32_
 
     // Fill page buffer
     uint32_t i;
-    for (i=0; i<(PAGE_SIZE/4) && size; i++) {
-      *dst_addr = read_unaligned_uint32(src_addr);
+    for (i = 0; i < (PAGE_SIZE / 4) && size; i++)
+    {
+      uint32_t new_value = read_unaligned_uint32(src_addr);
+      if (*dst_addr != new_value)
+      {
+        *dst_addr = new_value;
+      }
       src_addr += 4;
       dst_addr++;
       size--;