diff --git a/lib/doh.c b/lib/doh.c
index c3cf6cd9fe..610469222a 100644
--- a/lib/doh.c
+++ b/lib/doh.c
@@ -33,7 +33,6 @@
 #include "sendf.h"
 #include "multiif.h"
 #include "url.h"
-#include "curlx/base64.h"
 #include "connect.h"
 #include "strdup.h"
 #include "curlx/dynbuf.h"
diff --git a/lib/headers.c b/lib/headers.c
index b640059c5f..3ce3e01483 100644
--- a/lib/headers.c
+++ b/lib/headers.c
@@ -27,7 +27,6 @@
 #include "urldata.h"
 #include "sendf.h"
 #include "headers.h"
-#include "curlx/strparse.h"
 
 #if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_HEADERS_API)
 
diff --git a/lib/http2.c b/lib/http2.c
index 824e5941af..931640e93f 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -43,7 +43,6 @@
 #include "urlapi-int.h"
 #include "cfilters.h"
 #include "connect.h"
-#include "curlx/strparse.h"
 #include "transfer.h"
 #include "bufref.h"
 #include "curlx/dynbuf.h"
diff --git a/lib/http_aws_sigv4.h b/lib/http_aws_sigv4.h
index a8aacefe5f..25009c6809 100644
--- a/lib/http_aws_sigv4.h
+++ b/lib/http_aws_sigv4.h
@@ -27,7 +27,6 @@
 
 #include "curlx/dynbuf.h"
 #include "urldata.h"
-#include "curlx/strparse.h"
 
 /* this is for creating aws_sigv4 header output */
 CURLcode Curl_output_aws_sigv4(struct Curl_easy *data);