diff --git a/plugin/protocol/http2/src/http2_common.cpp b/plugin/protocol/http2/src/http2_common.cpp
index b59f52b..ef2ad56 100644
--- a/plugin/protocol/http2/src/http2_common.cpp
+++ b/plugin/protocol/http2/src/http2_common.cpp
@@ -38,7 +38,7 @@ Http2Plugin *http2_plugin()
 int
 http2_header_str_to_val(const char *str, const char * map[], unsigned int map_size)
 {
-	for (unsigned int i = 0; i < map_size; i++)
+	for (unsigned int i = 1; i < map_size; i++)
 	{
 		if (!strncasecmp(str, map[i], strlen(map[i])))
 		{