diff --git a/src/lib/http.c b/src/lib/http.c
index 87c2e98..c85bcfa 100644
--- a/src/lib/http.c
+++ b/src/lib/http.c
@@ -2,8 +2,6 @@
 #include <civetweb.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
diff --git a/src/lib/rfc3161.c b/src/lib/rfc3161.c
index 7912216..d923c8f 100644
--- a/src/lib/rfc3161.c
+++ b/src/lib/rfc3161.c
@@ -15,10 +15,7 @@
 #include <openssl/ts.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <stdio.h>
 #include <stdlib.h>
-#include <stdlib.h>
-#include <string.h>
 #include <string.h>
 #include <sys/syslog.h>
 #include <syslog.h>
diff --git a/src/lib/utils.c b/src/lib/utils.c
index b2e6181..4adb262 100644
--- a/src/lib/utils.c
+++ b/src/lib/utils.c
@@ -11,7 +11,6 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <syslog.h>
-#include <syslog.h>
 #include <unistd.h>
 
 static void signal_handler_general(int sig_num) {