diff --git a/contrib/jemalloc/include/jemalloc/internal/spin.h b/contrib/jemalloc/include/jemalloc/internal/spin.h
index e2afc98cfda2..aded0fcc174d 100644
--- a/contrib/jemalloc/include/jemalloc/internal/spin.h
+++ b/contrib/jemalloc/include/jemalloc/internal/spin.h
@@ -1,19 +1,13 @@
 #ifndef JEMALLOC_INTERNAL_SPIN_H
 #define JEMALLOC_INTERNAL_SPIN_H
 
-#ifdef JEMALLOC_SPIN_C_
-#  define SPIN_INLINE extern inline
-#else
-#  define SPIN_INLINE inline
-#endif
-
 #define SPIN_INITIALIZER {0U}
 
 typedef struct {
 	unsigned iteration;
 } spin_t;
 
-SPIN_INLINE void
+static inline void
 spin_adaptive(spin_t *spin) {
 	volatile uint32_t i;
 
diff --git a/contrib/jemalloc/src/spin.c b/contrib/jemalloc/src/spin.c
deleted file mode 100644
index 24372c26c949..000000000000
--- a/contrib/jemalloc/src/spin.c
+++ /dev/null
@@ -1,4 +0,0 @@
-#define JEMALLOC_SPIN_C_
-#include "jemalloc/internal/jemalloc_preamble.h"
-
-#include "jemalloc/internal/spin.h"
diff --git a/lib/libc/stdlib/jemalloc/Makefile.inc b/lib/libc/stdlib/jemalloc/Makefile.inc
index 0c64c8e537fa..b9adf47b9559 100644
--- a/lib/libc/stdlib/jemalloc/Makefile.inc
+++ b/lib/libc/stdlib/jemalloc/Makefile.inc
@@ -5,7 +5,7 @@
 JEMALLOCSRCS:= jemalloc.c arena.c background_thread.c base.c bitmap.c ckh.c \
 	ctl.c extent.c extent_dss.c extent_mmap.c hash.c hooks.c large.c \
 	malloc_io.c mutex.c mutex_pool.c nstime.c pages.c prng.c prof.c \
-	rtree.c spin.c stats.c sz.c tcache.c ticker.c tsd.c witness.c
+	rtree.c stats.c sz.c tcache.c ticker.c tsd.c witness.c
 
 SYM_MAPS+=${LIBC_SRCTOP}/stdlib/jemalloc/Symbol.map