diff --git a/src/Http.c b/src/Http.c
index 3572c66..6bbeacb 100644
--- a/src/Http.c
+++ b/src/Http.c
@@ -621,7 +621,7 @@ HttpParseHeaders(Stream * fp)
 
         strncpy(headerValue, headerPtr, len);
 
-        HashMapSet(headers, headerKey, headerValue);
+        Free(HashMapSet(headers, headerKey, headerValue));
         Free(headerKey);
     }