diff --git a/builds/win32/msvc6/engine.dsp b/builds/win32/msvc6/engine.dsp
index 1767cd5805..517bb6067f 100644
--- a/builds/win32/msvc6/engine.dsp
+++ b/builds/win32/msvc6/engine.dsp
@@ -280,6 +280,10 @@ SOURCE=..\..\..\src\jrd\gds.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\jrd\GlobalRWLock.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\gen\jrd\grant.cpp
 # End Source File
 # Begin Source File
@@ -888,6 +892,10 @@ SOURCE=..\..\..\src\jrd\gdsassert.h
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\jrd\GlobalRWLock.h
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\src\jrd\grant_proto.h
 # End Source File
 # Begin Source File
diff --git a/builds/win32/msvc6/engine_classic.dsp b/builds/win32/msvc6/engine_classic.dsp
index 27f7fe6973..cc9101a1b9 100644
--- a/builds/win32/msvc6/engine_classic.dsp
+++ b/builds/win32/msvc6/engine_classic.dsp
@@ -271,6 +271,10 @@ SOURCE=..\..\..\src\jrd\gds.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\jrd\GlobalRWLock.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\gen\jrd\grant.cpp
 # End Source File
 # Begin Source File
@@ -857,6 +861,10 @@ SOURCE=..\..\..\src\jrd\gdsassert.h
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\jrd\GlobalRWLock.h
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\src\jrd\grant_proto.h
 # End Source File
 # Begin Source File
diff --git a/builds/win32/msvc6/engine_embed.dsp b/builds/win32/msvc6/engine_embed.dsp
index 2eb2326b34..762a413fba 100644
--- a/builds/win32/msvc6/engine_embed.dsp
+++ b/builds/win32/msvc6/engine_embed.dsp
@@ -255,6 +255,10 @@ SOURCE=..\..\..\src\jrd\gds.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\jrd\GlobalRWLock.cpp
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\gen\jrd\grant.cpp
 # End Source File
 # Begin Source File
@@ -861,6 +865,10 @@ SOURCE=..\..\..\src\jrd\gdsassert.h
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\..\src\jrd\GlobalRWLock.h
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\..\src\jrd\grant_proto.h
 # End Source File
 # Begin Source File