diff --git a/src/terminal/terminal.c b/src/terminal/terminal.c
index f3b4c34a..0f38f2b0 100644
--- a/src/terminal/terminal.c
+++ b/src/terminal/terminal.c
@@ -97,7 +97,11 @@ save_temporary_filename(const char *filename)
 	}
 
 	if (temporary_files) {
-		add_hash_item(temporary_files, filename, strlen(filename), NULL);
+		char *copy = stracpy(filename);
+
+		if (copy) {
+			add_hash_item(temporary_files, copy, strlen(copy), NULL);
+		}
 	}
 }