diff --git a/include/parasite-syscall.h b/include/parasite-syscall.h
index bc75984d9..696547058 100644
--- a/include/parasite-syscall.h
+++ b/include/parasite-syscall.h
@@ -37,9 +37,6 @@ extern int parasite_dump_creds(struct parasite_ctl *ctl, struct _CredsEntry *ce)
 extern int parasite_dump_pages_seized(struct parasite_ctl *ctl, int vpid,
 				      struct vm_area_list *vma_area_list,
 				      struct cr_fdset *cr_fdset);
-extern int parasite_mprotect_seized(struct parasite_ctl *ctl,
-				    struct vm_area_list *vma_area_list,
-				    bool unprotect);
 struct parasite_dump_thread;
 struct pid;
 struct _CoreEntry;
diff --git a/parasite-syscall.c b/parasite-syscall.c
index d82995e95..1a2017a2a 100644
--- a/parasite-syscall.c
+++ b/parasite-syscall.c
@@ -551,7 +551,7 @@ static int generate_iovs(struct vma_area *vma, int pagemap, struct page_pipe *pp
 	return 0;
 }
 
-int parasite_mprotect_seized(struct parasite_ctl *ctl, struct vm_area_list *vma_area_list, bool unprotect)
+static int parasite_mprotect_seized(struct parasite_ctl *ctl, struct vm_area_list *vma_area_list, bool unprotect)
 {
 	struct parasite_mprotect_args *args;
 	struct parasite_vma_entry *p_vma;