diff --git a/indra/llcommon/StackWalker.cpp b/indra/llcommon/StackWalker.cpp
index c0d3104099f49cc7c87e856b50112fe9c3066399..d34ad9a3695b6ace7165c209de554e3a02656a2f 100644
--- a/indra/llcommon/StackWalker.cpp
+++ b/indra/llcommon/StackWalker.cpp
@@ -422,7 +422,7 @@ class StackWalkerInternal
   LPSTR m_szSymPath;
 
 #pragma pack(push,8)
-typedef struct IMAGEHLP_MODULE64_V3 {
+struct IMAGEHLP_MODULE64_V3 {
     DWORD    SizeOfStruct;           // set to sizeof(IMAGEHLP_MODULE64)
     DWORD64  BaseOfImage;            // base load address of module
     DWORD    ImageSize;              // virtual size of the loaded module
@@ -450,7 +450,7 @@ typedef struct IMAGEHLP_MODULE64_V3 {
     BOOL     Publics;                // contains public symbols
 };
 
-typedef struct IMAGEHLP_MODULE64_V2 {
+struct IMAGEHLP_MODULE64_V2 {
     DWORD    SizeOfStruct;           // set to sizeof(IMAGEHLP_MODULE64)
     DWORD64  BaseOfImage;            // base load address of module
     DWORD    ImageSize;              // virtual size of the loaded module
diff --git a/indra/llcommon/StackWalker.h b/indra/llcommon/StackWalker.h
index 834f89c471ea13a090dc2773fcf66e86bac4d5d1..4634765d0b14b2e6006ab0569eed882bf37ca695 100644
--- a/indra/llcommon/StackWalker.h
+++ b/indra/llcommon/StackWalker.h
@@ -148,7 +148,7 @@ class StackWalker
     CHAR loadedImageName[STACKWALK_MAX_NAMELEN];
   } CallstackEntry;
 
-  typedef enum CallstackEntryType {firstEntry, nextEntry, lastEntry};
+  enum CallstackEntryType {firstEntry, nextEntry, lastEntry};
 
   virtual void OnSymInit(LPCSTR szSearchPath, DWORD symOptions, LPCSTR szUserName);
   virtual void OnLoadModule(LPCSTR img, LPCSTR mod, DWORD64 baseAddr, DWORD size, DWORD result, LPCSTR symType, LPCSTR pdbName, ULONGLONG fileVersion);