diff --git a/ChangeLog b/ChangeLog
index 0f2f9c6c..2208116a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2015-07-10  Benno Schulenberg  <bensberg@justemail.net>
+       * src/nano.c (delete_opennode): Plug a small memory leak.
+
 2015-06-28  Benno Schulenberg  <bensberg@justemail.net>
 	* src/global.c (add_to_sclist), src/help.c (help_init), src/nano.h,
 	src/rcfile.c (parse_binding): When defining the toggles, give each
diff --git a/src/files.c b/src/files.c
index fb47d944..ca8848ff 100644
--- a/src/files.c
+++ b/src/files.c
@@ -224,7 +224,7 @@ int write_lockfile(const char *lockfilename, const char *origfilename, bool modi
 	return -1;
     }
 
-    openfile->lock_filename = lockfilename;
+    openfile->lock_filename = (char *) lockfilename;
 
     return 1;
 }
diff --git a/src/nano.c b/src/nano.c
index e87caa87..7fc8a429 100644
--- a/src/nano.c
+++ b/src/nano.c
@@ -569,6 +569,7 @@ void delete_opennode(openfilestruct *fileptr)
     free_filestruct(fileptr->fileage);
 #ifndef NANO_TINY
     free(fileptr->current_stat);
+    free(fileptr->lock_filename);
 #endif
     free(fileptr);
 }
diff --git a/src/nano.h b/src/nano.h
index db7be93b..d3b98d87 100644
--- a/src/nano.h
+++ b/src/nano.h
@@ -397,7 +397,7 @@ typedef struct openfilestruct {
     undo *current_undo;
 	/* The current (i.e. next) level of undo. */
     undo_type last_action;
-    const char *lock_filename;
+    char *lock_filename;
 	/* The path of the lockfile, if we created one. */
 #endif
 #ifndef DISABLE_COLOR