diff --git a/include/ts/apidefs.h.in b/include/ts/apidefs.h.in
index b2bf28140ce..80ec0a9d04a 100644
--- a/include/ts/apidefs.h.in
+++ b/include/ts/apidefs.h.in
@@ -598,8 +598,6 @@ typedef enum {
   AFTER_BODY,
 } TSFetchWakeUpOptions;
 
-#ifndef _HTTP_PROXY_API_ENUMS_H_
-#define _HTTP_PROXY_API_ENUMS_H_
 /// Values for per server outbound connection tracking group definition.
 /// See proxy.config.http.per_server.match
 typedef enum {
@@ -608,7 +606,6 @@ typedef enum {
   TS_SERVER_OUTBOUND_MATCH_HOST,
   TS_SERVER_OUTBOUND_MATCH_BOTH
 } TSOutboundConnectionMatchType;
-#endif
 
 /* librecords types */
 
diff --git a/proxy/http/HttpProxyAPIEnums.h b/proxy/http/HttpProxyAPIEnums.h
index f0d84557210..f888f5a63c7 100644
--- a/proxy/http/HttpProxyAPIEnums.h
+++ b/proxy/http/HttpProxyAPIEnums.h
@@ -55,18 +55,3 @@ typedef enum {
   TS_SERVER_SESSION_SHARING_POOL_GLOBAL,
   TS_SERVER_SESSION_SHARING_POOL_THREAD,
 } TSServerSessionSharingPoolType;
-
-// This is use to signal apidefs.h to not define these again.
-#ifndef _HTTP_PROXY_API_ENUMS_H_
-#define _HTTP_PROXY_API_ENUMS_H_
-
-/// Values for per server outbound connection tracking group definition.
-/// See proxy.config.http.per_server.match
-typedef enum {
-  TS_SERVER_OUTBOUND_MATCH_IP,
-  TS_SERVER_OUTBOUND_MATCH_PORT,
-  TS_SERVER_OUTBOUND_MATCH_HOST,
-  TS_SERVER_OUTBOUND_MATCH_BOTH
-} TSOutboundConnectionMatchType;
-
-#endif