diff --git a/.gitignore b/.gitignore
index ec9c0b92..79d454f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -33,6 +33,7 @@
 /include/jemalloc/jemalloc_protos.h
 /include/jemalloc/jemalloc_protos_jet.h
 /include/jemalloc/jemalloc_rename.h
+/include/jemalloc/jemalloc_typedefs.h
 
 /src/*.[od]
 /src/*.gcda
diff --git a/configure.ac b/configure.ac
index 3b658852..ce4af213 100644
--- a/configure.ac
+++ b/configure.ac
@@ -545,6 +545,7 @@ cfgoutputs_in="${cfgoutputs_in} doc/manpages.xsl.in"
 cfgoutputs_in="${cfgoutputs_in} doc/jemalloc.xml.in"
 cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_macros.h.in"
 cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_protos.h.in"
+cfgoutputs_in="${cfgoutputs_in} include/jemalloc/jemalloc_typedefs.h.in"
 cfgoutputs_in="${cfgoutputs_in} include/jemalloc/internal/jemalloc_internal.h.in"
 cfgoutputs_in="${cfgoutputs_in} test/test.sh.in"
 cfgoutputs_in="${cfgoutputs_in} test/include/test/jemalloc_test.h.in"
@@ -555,6 +556,7 @@ cfgoutputs_out="${cfgoutputs_out} doc/manpages.xsl"
 cfgoutputs_out="${cfgoutputs_out} doc/jemalloc.xml"
 cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_macros.h"
 cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_protos.h"
+cfgoutputs_out="${cfgoutputs_out} include/jemalloc/jemalloc_typedefs.h"
 cfgoutputs_out="${cfgoutputs_out} include/jemalloc/internal/jemalloc_internal.h"
 cfgoutputs_out="${cfgoutputs_out} test/test.sh"
 cfgoutputs_out="${cfgoutputs_out} test/include/test/jemalloc_test.h"
@@ -565,6 +567,7 @@ cfgoutputs_tup="${cfgoutputs_tup} doc/manpages.xsl:doc/manpages.xsl.in"
 cfgoutputs_tup="${cfgoutputs_tup} doc/jemalloc.xml:doc/jemalloc.xml.in"
 cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_macros.h:include/jemalloc/jemalloc_macros.h.in"
 cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_protos.h:include/jemalloc/jemalloc_protos.h.in"
+cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/jemalloc_typedefs.h:include/jemalloc/jemalloc_typedefs.h.in"
 cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/internal/jemalloc_internal.h"
 cfgoutputs_tup="${cfgoutputs_tup} test/test.sh:test/test.sh.in"
 cfgoutputs_tup="${cfgoutputs_tup} test/include/test/jemalloc_test.h:test/include/test/jemalloc_test.h.in"
diff --git a/include/jemalloc/jemalloc.sh b/include/jemalloc/jemalloc.sh
index e4738eba..7e1c8be1 100755
--- a/include/jemalloc/jemalloc.sh
+++ b/include/jemalloc/jemalloc.sh
@@ -12,7 +12,7 @@ extern "C" {
 EOF
 
 for hdr in jemalloc_defs.h jemalloc_rename.h jemalloc_macros.h \
-           jemalloc_protos.h jemalloc_mangle.h ; do
+           jemalloc_protos.h jemalloc_typedefs.h jemalloc_mangle.h ; do
   cat "${objroot}include/jemalloc/${hdr}" \
       | grep -v 'Generated from .* by configure\.' \
       | sed -e 's/^#define /#define	/g' \
diff --git a/include/jemalloc/jemalloc_protos.h.in b/include/jemalloc/jemalloc_protos.h.in
index 67268c47..59aeee11 100644
--- a/include/jemalloc/jemalloc_protos.h.in
+++ b/include/jemalloc/jemalloc_protos.h.in
@@ -44,6 +44,3 @@ JEMALLOC_EXPORT void *	@je_@memalign(size_t alignment, size_t size)
 #ifdef JEMALLOC_OVERRIDE_VALLOC
 JEMALLOC_EXPORT void *	@je_@valloc(size_t size) JEMALLOC_ATTR(malloc);
 #endif
-
-typedef void *(chunk_alloc_t)(size_t, size_t, bool *, unsigned);
-typedef bool (chunk_dalloc_t)(void *, size_t, unsigned);
diff --git a/include/jemalloc/jemalloc_typedefs.h.in b/include/jemalloc/jemalloc_typedefs.h.in
new file mode 100644
index 00000000..47e57ca7
--- /dev/null
+++ b/include/jemalloc/jemalloc_typedefs.h.in
@@ -0,0 +1,2 @@
+typedef void *(chunk_alloc_t)(size_t, size_t, bool *, unsigned);
+typedef bool (chunk_dalloc_t)(void *, size_t, unsigned);