diff --git a/Makefile.in b/Makefile.in
index a3c43a6d..6bb56a01 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -106,6 +106,7 @@ C_SRCS := $(srcroot)src/jemalloc.c \
 	$(srcroot)src/ckh.c \
 	$(srcroot)src/counter.c \
 	$(srcroot)src/ctl.c \
+	$(srcroot)src/decay.c \
 	$(srcroot)src/div.c \
 	$(srcroot)src/ecache.c \
 	$(srcroot)src/edata.c \
diff --git a/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj b/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
index 3c17e50b..156e4593 100644
--- a/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
+++ b/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj
@@ -46,6 +46,7 @@
     <ClCompile Include="..\..\..\..\src\ckh.c" />
     <ClCompile Include="..\..\..\..\src\counter.c" />
     <ClCompile Include="..\..\..\..\src\ctl.c" />
+    <ClCompile Include="..\..\..\..\src\decay.c" />
     <ClCompile Include="..\..\..\..\src\div.c" />
     <ClCompile Include="..\..\..\..\src\ecache.c" />
     <ClCompile Include="..\..\..\..\src\edata.c" />
diff --git a/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj.filters b/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj.filters
index 2f5ed621..45557f65 100644
--- a/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj.filters
+++ b/msvc/projects/vc2015/jemalloc/jemalloc.vcxproj.filters
@@ -37,6 +37,9 @@
     <ClCompile Include="..\..\..\..\src\ctl.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\..\src\decay.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\..\src\div.c">
       <Filter>Source Files</Filter>
     </ClCompile>
diff --git a/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj b/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj
index d63042d8..c5cfb95f 100644
--- a/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj
+++ b/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj
@@ -46,6 +46,7 @@
     <ClCompile Include="..\..\..\..\src\ckh.c" />
     <ClCompile Include="..\..\..\..\src\counter.c" />
     <ClCompile Include="..\..\..\..\src\ctl.c" />
+    <ClCompile Include="..\..\..\..\src\decay.c" />
     <ClCompile Include="..\..\..\..\src\div.c" />
     <ClCompile Include="..\..\..\..\src\ecache.c" />
     <ClCompile Include="..\..\..\..\src\edata.c" />
diff --git a/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj.filters b/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj.filters
index 2f5ed621..45557f65 100644
--- a/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj.filters
+++ b/msvc/projects/vc2017/jemalloc/jemalloc.vcxproj.filters
@@ -37,6 +37,9 @@
     <ClCompile Include="..\..\..\..\src\ctl.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\..\src\decay.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\..\..\src\div.c">
       <Filter>Source Files</Filter>
     </ClCompile>
diff --git a/src/decay.c b/src/decay.c
new file mode 100644
index 00000000..454cb475
--- /dev/null
+++ b/src/decay.c
@@ -0,0 +1,3 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+