diff --git a/app/fileblockdevice/FileBlockDevice.cpp b/app/fileblockdevice/FileBlockDevice.cpp
index c8bfc1b..b93b44b 100644
--- a/app/fileblockdevice/FileBlockDevice.cpp
+++ b/app/fileblockdevice/FileBlockDevice.cpp
@@ -121,6 +121,12 @@ int FileBlockDevice::program(const void *buffer, bd_addr_t addr, bd_size_t size)
         return BD_ERROR_DEVICE_ERROR;
     }
 
+    err = fflush(_file[0]);
+    if (err != 0u) {
+        printf("E-Program:flush\n");
+        return BD_ERROR_DEVICE_ERROR;
+    }
+
     return BD_ERROR_OK;
 }
 
@@ -148,6 +154,12 @@ int FileBlockDevice::erase(bd_addr_t addr, bd_size_t size)
         }
     }
 
+    int err = fflush(_file[0]);
+    if (err != 0u) {
+        printf("E-Erase:flush\n");
+        return BD_ERROR_DEVICE_ERROR;
+    }
+
     return BD_ERROR_OK;
 }