diff --git a/lib/imap.c b/lib/imap.c
index 42b76fe1b..01f81639c 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -77,7 +77,6 @@
 #include "multiif.h"
 #include "url.h"
 #include "rawstr.h"
-#include "strtoofft.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
 #include <curl/mprintf.h>
diff --git a/lib/pop3.c b/lib/pop3.c
index 4e6fbd365..2f67f8f9e 100644
--- a/lib/pop3.c
+++ b/lib/pop3.c
@@ -82,7 +82,6 @@
 #include "multiif.h"
 #include "url.h"
 #include "rawstr.h"
-#include "strtoofft.h"
 #include "curl_sasl.h"
 
 #define _MPRINTF_REPLACE /* use our functions only */
diff --git a/lib/smtp.c b/lib/smtp.c
index f54b67dc0..0924409b7 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -81,7 +81,6 @@
 #include "multiif.h"
 #include "url.h"
 #include "rawstr.h"
-#include "strtoofft.h"
 #include "curl_gethostname.h"
 #include "curl_sasl.h"
 #include "warnless.h"