diff --git a/src/ex_getln.c b/src/ex_getln.c
index 7d1e2825..a541f04 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -5476,6 +5476,7 @@
 	ga_append(&ga, '\n');
 	vim_free(theline);
     }
+    ga_append(&ga, NUL);
 
     return (char_u *)ga.ga_data;
 }