diff --git a/src/arena.c b/src/arena.c
index b61d373b..2a3af5c6 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_ARENA_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/background_thread.c b/src/background_thread.c
index 6b680530..db11405e 100644
--- a/src/background_thread.c
+++ b/src/background_thread.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_BACKGROUND_THREAD_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/base.c b/src/base.c
index ebb42da5..d3732bab 100644
--- a/src/base.c
+++ b/src/base.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_BASE_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/bitmap.c b/src/bitmap.c
index 468b3178..0ccedc5d 100644
--- a/src/bitmap.c
+++ b/src/bitmap.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_BITMAP_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/buf_writer.c b/src/buf_writer.c
index 06a2735b..7c6f7940 100644
--- a/src/buf_writer.c
+++ b/src/buf_writer.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_BUF_WRITER_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/ckh.c b/src/ckh.c
index 1bf6df5a..9441fbad 100644
--- a/src/ckh.c
+++ b/src/ckh.c
@@ -34,7 +34,6 @@
  * respectively.
  *
  ******************************************************************************/
-#define JEMALLOC_CKH_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 
 #include "jemalloc/internal/ckh.h"
diff --git a/src/counter.c b/src/counter.c
index 71eda69f..8f1ae3af 100644
--- a/src/counter.c
+++ b/src/counter.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_COUNTER_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/ctl.c b/src/ctl.c
index 24d9eb34..24c959c4 100644
--- a/src/ctl.c
+++ b/src/ctl.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_CTL_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/extent_dss.c b/src/extent_dss.c
index 17a08227..81161b3a 100644
--- a/src/extent_dss.c
+++ b/src/extent_dss.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_EXTENT_DSS_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/extent_mmap.c b/src/extent_mmap.c
index 17fd1c8f..5f0ee2d2 100644
--- a/src/extent_mmap.c
+++ b/src/extent_mmap.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_EXTENT_MMAP_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/hash.c b/src/hash.c
index 7b2bdc2b..3a26b393 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -1,3 +1,2 @@
-#define JEMALLOC_HASH_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
diff --git a/src/large.c b/src/large.c
index cc3e727c..3ea08be4 100644
--- a/src/large.c
+++ b/src/large.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_LARGE_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/malloc_io.c b/src/malloc_io.c
index d2879bb4..f5004f0a 100644
--- a/src/malloc_io.c
+++ b/src/malloc_io.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_MALLOC_IO_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/mutex.c b/src/mutex.c
index bffcfb5f..83d9ce76 100644
--- a/src/mutex.c
+++ b/src/mutex.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_MUTEX_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/mutex_pool.c b/src/mutex_pool.c
index f24d10e4..d7861dcd 100644
--- a/src/mutex_pool.c
+++ b/src/mutex_pool.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_MUTEX_POOL_C_
 
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
diff --git a/src/pages.c b/src/pages.c
index 62e84f04..9413d874 100644
--- a/src/pages.c
+++ b/src/pages.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_PAGES_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 
 #include "jemalloc/internal/pages.h"
diff --git a/src/prng.c b/src/prng.c
index 83c04bf9..3a26b393 100644
--- a/src/prng.c
+++ b/src/prng.c
@@ -1,3 +1,2 @@
-#define JEMALLOC_PRNG_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
diff --git a/src/prof.c b/src/prof.c
index db895f85..8ab68932 100644
--- a/src/prof.c
+++ b/src/prof.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_PROF_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/prof_data.c b/src/prof_data.c
index fe9ef154..49cc6ee3 100644
--- a/src/prof_data.c
+++ b/src/prof_data.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_PROF_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/prof_log.c b/src/prof_log.c
index 00c76596..bda01d04 100644
--- a/src/prof_log.c
+++ b/src/prof_log.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_PROF_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/prof_recent.c b/src/prof_recent.c
index 9af753f6..426f62ec 100644
--- a/src/prof_recent.c
+++ b/src/prof_recent.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_PROF_RECENT_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/rtree.c b/src/rtree.c
index 07a4e9ac..6496b5af 100644
--- a/src/rtree.c
+++ b/src/rtree.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_RTREE_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/stats.c b/src/stats.c
index fb88e5a6..407b60cc 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_STATS_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/tcache.c b/src/tcache.c
index ff428842..b73fd0dd 100644
--- a/src/tcache.c
+++ b/src/tcache.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_TCACHE_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/thread_event.c b/src/thread_event.c
index 99a188dd..bb91baa7 100644
--- a/src/thread_event.c
+++ b/src/thread_event.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_THREAD_EVENT_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/ticker.c b/src/ticker.c
index d7b8cd26..3a26b393 100644
--- a/src/ticker.c
+++ b/src/ticker.c
@@ -1,3 +1,2 @@
-#define JEMALLOC_TICKER_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
diff --git a/src/tsd.c b/src/tsd.c
index cc1b3ac8..0dd4036b 100644
--- a/src/tsd.c
+++ b/src/tsd.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_TSD_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"
 
diff --git a/src/witness.c b/src/witness.c
index e9ddf596..4474af04 100644
--- a/src/witness.c
+++ b/src/witness.c
@@ -1,4 +1,3 @@
-#define JEMALLOC_WITNESS_C_
 #include "jemalloc/internal/jemalloc_preamble.h"
 #include "jemalloc/internal/jemalloc_internal_includes.h"