diff --git a/src/libstrongswan/asn1/asn1.h b/src/libstrongswan/asn1/asn1.h
index 432214766..e0126a3b3 100644
--- a/src/libstrongswan/asn1/asn1.h
+++ b/src/libstrongswan/asn1/asn1.h
@@ -26,7 +26,6 @@
 #define ASN1_H_
 
 #include <stdarg.h>
-#include <gmp.h>
 
 #include <library.h>
 #include <asn1/oid.h>
diff --git a/src/libstrongswan/plugins/x509/x509_cert.c b/src/libstrongswan/plugins/x509/x509_cert.c
index ab32e13c3..f427734bf 100644
--- a/src/libstrongswan/plugins/x509/x509_cert.c
+++ b/src/libstrongswan/plugins/x509/x509_cert.c
@@ -23,7 +23,6 @@
 
 #include "x509_cert.h"
 
-#include <gmp.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <string.h>