diff --git a/libcurl_http_fetcher.cc b/libcurl_http_fetcher.cc
index 30ee1f3..ee31c8d 100644
--- a/libcurl_http_fetcher.cc
+++ b/libcurl_http_fetcher.cc
@@ -58,6 +58,7 @@
 LibcurlHttpFetcher::~LibcurlHttpFetcher() {
   LOG_IF(ERROR, transfer_in_progress_)
       << "Destroying the fetcher while a transfer is in progress.";
+  CancelProxyResolution();
   CleanUp();
 }
 
@@ -313,6 +314,7 @@
 }
 
 void LibcurlHttpFetcher::ForceTransferTermination() {
+  CancelProxyResolution();
   CleanUp();
   if (delegate_) {
     // Note that after the callback returns this object may be destroyed.