diff --git a/include/jemalloc/internal/ctl_externs.h b/include/jemalloc/internal/ctl_externs.h
index 17bbba06..875a8101 100644
--- a/include/jemalloc/internal/ctl_externs.h
+++ b/include/jemalloc/internal/ctl_externs.h
@@ -1,6 +1,8 @@
 #ifndef JEMALLOC_INTERNAL_CTL_EXTERNS_H
 #define JEMALLOC_INTERNAL_CTL_EXTERNS_H
 
+#include "jemalloc/internal/malloc_io.h"
+
 /* Maximum ctl tree depth. */
 #define CTL_MAX_DEPTH	7
 
diff --git a/include/jemalloc/internal/jemalloc_internal_includes.h b/include/jemalloc/internal/jemalloc_internal_includes.h
index 64cda53a..d4d0c201 100644
--- a/include/jemalloc/internal/jemalloc_internal_includes.h
+++ b/include/jemalloc/internal/jemalloc_internal_includes.h
@@ -41,7 +41,6 @@
 /******************************************************************************/
 
 #include "jemalloc/internal/assert.h"
-#include "jemalloc/internal/malloc_io.h"
 #include "jemalloc/internal/util.h"
 
 /******************************************************************************/
diff --git a/src/ckh.c b/src/ckh.c
index a359a5cc..a9d181bd 100644
--- a/src/ckh.c
+++ b/src/ckh.c
@@ -38,6 +38,8 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
+#include "jemalloc/internal/malloc_io.h"
+
 /******************************************************************************/
 /* Function prototypes for non-inline static functions. */
 
diff --git a/src/jemalloc.c b/src/jemalloc.c
index 4c38517b..4b4e9430 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -3,6 +3,7 @@
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
 #include "jemalloc/internal/atomic.h"
+#include "jemalloc/internal/malloc_io.h"
 
 /******************************************************************************/
 /* Data. */
diff --git a/src/malloc_io.c b/src/malloc_io.c
index 98ef7a65..11dc68db 100644
--- a/src/malloc_io.c
+++ b/src/malloc_io.c
@@ -1,6 +1,7 @@
 #define JEMALLOC_MALLOC_IO_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
+#include "jemalloc/internal/malloc_io.h"
 
 #ifdef assert
 #  undef assert
diff --git a/src/mutex.c b/src/mutex.c
index 26af5239..92c23dab 100644
--- a/src/mutex.c
+++ b/src/mutex.c
@@ -2,6 +2,8 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
+#include "jemalloc/internal/malloc_io.h"
+
 #if defined(JEMALLOC_LAZY_LOCK) && !defined(_WIN32)
 #include <dlfcn.h>
 #endif
diff --git a/src/pages.c b/src/pages.c
index 53ca653b..f1138231 100644
--- a/src/pages.c
+++ b/src/pages.c
@@ -2,6 +2,8 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
+#include "jemalloc/internal/malloc_io.h"
+
 #ifdef JEMALLOC_SYSCTL_VM_OVERCOMMIT
 #include <sys/sysctl.h>
 #endif
diff --git a/src/prof.c b/src/prof.c
index 334466b1..276ca360 100644
--- a/src/prof.c
+++ b/src/prof.c
@@ -2,6 +2,8 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
+#include "jemalloc/internal/malloc_io.h"
+
 /******************************************************************************/
 
 #ifdef JEMALLOC_PROF_LIBUNWIND
diff --git a/src/witness.c b/src/witness.c
index 26b16e77..bd040826 100644
--- a/src/witness.c
+++ b/src/witness.c
@@ -2,6 +2,8 @@
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
+#include "jemalloc/internal/malloc_io.h"
+
 void
 witness_init(witness_t *witness, const char *name, witness_rank_t rank,
     witness_comp_t *comp, void *opaque) {