diff --git a/networking/wget.c b/networking/wget.c
index 26b62cc58..b8cd54964 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -880,7 +880,14 @@ However, in real world it was observed that some web servers
 		 */
 		while ((str = gethdr(buf, sizeof(buf), sfp /*, &n*/)) != NULL) {
 			/* gethdr converted "FOO:" string to lowercase */
-			smalluint key = index_in_strings(keywords, buf) + 1;
+			smalluint key;
+			/* strip trailing whitespace */
+			char *s = strchrnul(str, '\0') - 1;
+			while (s >= str && (*s == ' ' || *s == '\t')) {
+				*s = '\0';
+				s--;
+			}
+			key = index_in_strings(keywords, buf) + 1;
 			if (key == KEY_content_length) {
 				content_len = BB_STRTOOFF(str, NULL, 10);
 				if (errno || content_len < 0) {