diff --git a/FmpDevicePkg/FmpDxe/DetectTestKey.c b/FmpDevicePkg/FmpDxe/DetectTestKey.c
index 52e780dac8..e697a08489 100644
--- a/FmpDevicePkg/FmpDxe/DetectTestKey.c
+++ b/FmpDevicePkg/FmpDxe/DetectTestKey.c
@@ -139,7 +139,7 @@ DetectTestKey (
   }
 
   //
-  // If test key detected or an error occured checking for the test key, then
+  // If test key detected or an error occurred checking for the test key, then
   // set PcdTestKeyUsed to TRUE.
   //
   if (TestKeyUsed) {
diff --git a/FmpDevicePkg/Include/Library/FmpDeviceLib.h b/FmpDevicePkg/Include/Library/FmpDeviceLib.h
index 708ebca8c5..c435b23030 100644
--- a/FmpDevicePkg/Include/Library/FmpDeviceLib.h
+++ b/FmpDevicePkg/Include/Library/FmpDeviceLib.h
@@ -73,7 +73,7 @@ RegisterFmpInstaller (
   @retval EFI_INVALID_PARAMETER  Size is NULL.
   @retval EFI_UNSUPPORTED        The firmware device does not support reporting
                                  the size of the currently stored firmware image.
-  @retval EFI_DEVICE_ERROR       An error occured attempting to determine the
+  @retval EFI_DEVICE_ERROR       An error occurred attempting to determine the
                                  size of the firmware image currently stored in
                                  in the firmware device.