diff --git a/lib/easy.c b/lib/easy.c
index 117af41f08..8c225d0804 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -815,7 +815,7 @@ static CURLcode easy_perform(struct Curl_easy *data, bool events)
  */
 CURLcode curl_easy_perform(CURL *curl)
 {
-  struct Curl_eapi_guard guard;
+  struct Curl_eapi_guard guard = { 0 };
   CURLcode result;
 
   if(CURL_EAPI_ENTER(&guard, curl, easy_perform, &result)) {
diff --git a/lib/http.c b/lib/http.c
index 47e7cd3df6..ed2dff373f 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -200,7 +200,7 @@ static bool http_header_is_empty(const char *header)
  */
 static CURLcode copy_custom_value(const char *header, char **valp)
 {
-  struct Curl_str out;
+  struct Curl_str out = { 0 };
 
   /* find the end of the header name */
   if(header_has_value(&header, &out)) {