diff --git a/include/jemalloc/internal/prof_data.h b/include/jemalloc/internal/prof_data.h
index 09a40994..c1dc3ec4 100644
--- a/include/jemalloc/internal/prof_data.h
+++ b/include/jemalloc/internal/prof_data.h
@@ -19,4 +19,12 @@ void bt_init(prof_bt_t *bt, void **vec);
 void prof_backtrace(tsd_t *tsd, prof_bt_t *bt);
 void prof_tctx_try_destroy(tsd_t *tsd, prof_tctx_t *tctx);
 
+/* Used in unit tests. */
+size_t prof_tdata_count(void);
+size_t prof_bt_count(void);
+typedef void (prof_dump_header_t)(tsdn_t *, const prof_cnt_t *);
+extern prof_dump_header_t *JET_MUTABLE prof_dump_header;
+void prof_cnt_all(uint64_t *curobjs, uint64_t *curbytes, uint64_t *accumobjs,
+    uint64_t *accumbytes);
+
 #endif /* JEMALLOC_INTERNAL_PROF_DATA_H */
diff --git a/include/jemalloc/internal/prof_externs.h b/include/jemalloc/internal/prof_externs.h
index 9a2b1224..a1baaff1 100644
--- a/include/jemalloc/internal/prof_externs.h
+++ b/include/jemalloc/internal/prof_externs.h
@@ -92,18 +92,12 @@ void prof_sample_event_handler(tsd_t *tsd, uint64_t elapsed);
 /* Used by unit tests. */
 typedef int (prof_sys_thread_name_read_t)(char *buf, size_t limit);
 extern prof_sys_thread_name_read_t *JET_MUTABLE prof_sys_thread_name_read;
-size_t prof_tdata_count(void);
-size_t prof_bt_count(void);
 typedef int (prof_dump_open_file_t)(const char *, int);
 extern prof_dump_open_file_t *JET_MUTABLE prof_dump_open_file;
 typedef ssize_t (prof_dump_write_file_t)(int, const void *, size_t);
 extern prof_dump_write_file_t *JET_MUTABLE prof_dump_write_file;
-typedef void (prof_dump_header_t)(tsdn_t *, const prof_cnt_t *);
-extern prof_dump_header_t *JET_MUTABLE prof_dump_header;
 typedef int (prof_dump_open_maps_t)();
 extern prof_dump_open_maps_t *JET_MUTABLE prof_dump_open_maps;
-void prof_cnt_all(uint64_t *curobjs, uint64_t *curbytes, uint64_t *accumobjs,
-    uint64_t *accumbytes);
 
 bool prof_log_start(tsdn_t *tsdn, const char *filename);
 bool prof_log_stop(tsdn_t *tsdn);
diff --git a/test/unit/prof_accum.c b/test/unit/prof_accum.c
index 8fc58813..5b8085e1 100644
--- a/test/unit/prof_accum.c
+++ b/test/unit/prof_accum.c
@@ -1,5 +1,7 @@
 #include "test/jemalloc_test.h"
 
+#include "jemalloc/internal/prof_data.h"
+
 #define NTHREADS		4
 #define NALLOCS_PER_THREAD	50
 #define DUMP_INTERVAL		1
diff --git a/test/unit/prof_active.c b/test/unit/prof_active.c
index 41c0512d..af29e7ad 100644
--- a/test/unit/prof_active.c
+++ b/test/unit/prof_active.c
@@ -1,5 +1,7 @@
 #include "test/jemalloc_test.h"
 
+#include "jemalloc/internal/prof_data.h"
+
 static void
 mallctl_bool_get(const char *name, bool expected, const char *func, int line) {
 	bool old;
diff --git a/test/unit/prof_reset.c b/test/unit/prof_reset.c
index dc64a04c..22bf7963 100644
--- a/test/unit/prof_reset.c
+++ b/test/unit/prof_reset.c
@@ -1,5 +1,7 @@
 #include "test/jemalloc_test.h"
 
+#include "jemalloc/internal/prof_data.h"
+
 static int
 prof_dump_open_file_intercept(const char *filename, int mode) {
 	int fd;
diff --git a/test/unit/prof_tctx.c b/test/unit/prof_tctx.c
index 4bc597b6..801e5f79 100644
--- a/test/unit/prof_tctx.c
+++ b/test/unit/prof_tctx.c
@@ -1,5 +1,7 @@
 #include "test/jemalloc_test.h"
 
+#include "jemalloc/internal/prof_data.h"
+
 TEST_BEGIN(test_prof_realloc) {
 	tsd_t *tsd;
 	int flags;