diff --git a/lib/curl_get_line.c b/lib/curl_get_line.c
index 85b3525be7..6fcd043c93 100644
--- a/lib/curl_get_line.c
+++ b/lib/curl_get_line.c
@@ -40,6 +40,8 @@ CURLcode Curl_get_line(struct dynbuf *buf, FILE *input, bool *eof)
   while(1) {
     size_t rlen;
     const char *b = fgets(buffer, sizeof(buffer), input);
+    if(!b && ferror(input))
+      return CURLE_READ_ERROR;
 
     *eof = feof(input);