diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9109144c..6f745c02 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,8 @@ Bug Fixes
 - Improved macro hygiene support to properly rename temporary variables in the `let-values` macro.
 - Improve output of `error` by outputting objects as they are represented in memory by using `write`.
 - Check for duplicate lambda parameters during compilation.
-- Fixd an error that was being raised when calling `(random-source-randomize! default-random-source)`.
+- Fixed an error that was being raised when calling `(random-source-randomize! default-random-source)`.
+- Raise an error if `list->string` encounters a list element that is not a character.
 
 # 0.2 - September 7, 2016
 
diff --git a/runtime.c b/runtime.c
index 517d0073..b378ad96 100644
--- a/runtime.c
+++ b/runtime.c
@@ -1491,6 +1491,9 @@ object Cyc_list2string(void *data, object cont, object lst)
   len = Cyc_length(data, lst);  // Inefficient, walks whole list
   buf = alloca(sizeof(char) * (obj_obj2int(len) + 1));
   while ((lst != NULL)) {
+    if (!obj_is_char(car(lst))) {
+      Cyc_rt_raise2(data, "Expected character but received", car(lst));
+    }
     buf[i++] = obj_obj2char(car(lst));
     lst = cdr(lst);
   }