diff --git a/sys/amd64/amd64/bpf_jit_machdep.c b/sys/amd64/amd64/bpf_jit_machdep.c
index f199c80b292..e8232813b8f 100644
--- a/sys/amd64/amd64/bpf_jit_machdep.c
+++ b/sys/amd64/amd64/bpf_jit_machdep.c
@@ -55,8 +55,6 @@ __FBSDID("$FreeBSD$");
 
 #include <amd64/amd64/bpf_jit_machdep.h>
 
-bpf_filter_func	bpf_jit_compile(struct bpf_insn *, u_int, size_t *);
-
 /*
  * Emit routine to update the jump table.
  */
diff --git a/sys/i386/i386/bpf_jit_machdep.c b/sys/i386/i386/bpf_jit_machdep.c
index f00eb24ed6f..67a13cc6c2d 100644
--- a/sys/i386/i386/bpf_jit_machdep.c
+++ b/sys/i386/i386/bpf_jit_machdep.c
@@ -55,8 +55,6 @@ __FBSDID("$FreeBSD$");
 
 #include <i386/i386/bpf_jit_machdep.h>
 
-bpf_filter_func	bpf_jit_compile(struct bpf_insn *, u_int, size_t *);
-
 /*
  * Emit routine to update the jump table.
  */
diff --git a/sys/net/bpf_jitter.h b/sys/net/bpf_jitter.h
index 90a1ff5fbb0..88a349df97e 100644
--- a/sys/net/bpf_jitter.h
+++ b/sys/net/bpf_jitter.h
@@ -80,4 +80,11 @@ bpf_jit_filter	*bpf_jitter(struct bpf_insn *fp, int nins);
  */
 void		bpf_destroy_jit_filter(bpf_jit_filter *filter);
 
+/*
+ * Declarations for machine-dependent functions.
+ */
+struct bpf_insn;
+
+bpf_filter_func	bpf_jit_compile(struct bpf_insn *, u_int, size_t *);
+
 #endif	/* _NET_BPF_JITTER_H_ */