diff --git a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.c b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.c
index e6be20aa1e..3bb9921cc3 100644
--- a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.c
+++ b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.c
@@ -293,7 +293,7 @@ TriggerSoftInterrupt (
 }
 
 /**
-  Caculate Mailbox checksum and update the checksum field.
+  Calculate Mailbox checksum and update the checksum field.
 
   @param[in]  Mailbox  Debug Agent Mailbox pointer.
 
diff --git a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.h b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.h
index 65e05fb4c6..c92204136f 100644
--- a/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.h
+++ b/SourceLevelDebugPkg/Library/DebugAgent/DebugAgentCommon/DebugAgent.h
@@ -338,7 +338,7 @@ IsDebugAgentInitialzed (
   );
 
 /**
-  Caculate Mailbox checksum and update the checksum field.
+  Calculate Mailbox checksum and update the checksum field.
 
   @param[in]  Mailbox  Debug Agent Mailbox pointer.