diff --git a/Makefile.in b/Makefile.in
index 62ae71f0..21a10532 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -104,6 +104,7 @@ C_SRCS := $(srcroot)src/jemalloc.c \
 	$(srcroot)src/ckh.c \
 	$(srcroot)src/ctl.c \
 	$(srcroot)src/div.c \
+	$(srcroot)src/eset.c \
 	$(srcroot)src/extent.c \
 	$(srcroot)src/extent_dss.c \
 	$(srcroot)src/extent_mmap.c \
diff --git a/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj b/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
index b6b83395..a9683384 100644
--- a/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
+++ b/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
@@ -44,6 +44,7 @@
     <ClCompile Include="..\..\..\..\src\ckh.c" />
     <ClCompile Include="..\..\..\..\src\ctl.c" />
     <ClCompile Include="..\..\..\..\src\div.c" />
+    <ClCompile Include="..\..\..\..\src\eset.c" />
     <ClCompile Include="..\..\..\..\src\extent.c" />
     <ClCompile Include="..\..\..\..\src\extent_dss.c" />
     <ClCompile Include="..\..\..\..\src\extent_mmap.c" />
diff --git a/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj b/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj
index f405ea3d..72a57e56 100644
--- a/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj
+++ b/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj
@@ -44,6 +44,7 @@
     <ClCompile Include="..\..\..\..\src\ckh.c" />
     <ClCompile Include="..\..\..\..\src\ctl.c" />
     <ClCompile Include="..\..\..\..\src\div.c" />
+    <ClCompile Include="..\..\..\..\src\eset.c" />
     <ClCompile Include="..\..\..\..\src\extent.c" />
     <ClCompile Include="..\..\..\..\src\extent_dss.c" />
     <ClCompile Include="..\..\..\..\src\extent_mmap.c" />
diff --git a/src/eset.c b/src/eset.c
new file mode 100644
index 00000000..3b8d1cbc
--- /dev/null
+++ b/src/eset.c
@@ -0,0 +1,4 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/eset.h"