diff --git a/common/marshaller.c b/common/marshaller.c
index 2934d22..36aadfd 100644
--- a/common/marshaller.c
+++ b/common/marshaller.c
@@ -392,7 +392,7 @@ SpiceMarshaller *spice_marshaller_get_ptr_submarshaller(SpiceMarshaller *m, int
     return m2;
 }
 
-uint8_t *lookup_ref(MarshallerRef *ref)
+static uint8_t *lookup_ref(MarshallerRef *ref)
 {
     MarshallerItem *item;
 
diff --git a/common/ssl_verify.c b/common/ssl_verify.c
index cb77b7e..236fa01 100644
--- a/common/ssl_verify.c
+++ b/common/ssl_verify.c
@@ -263,7 +263,7 @@ static int verify_hostname(X509* cert, const char *hostname)
     return cn_match;
 }
 
-X509_NAME* subject_to_x509_name(const char *subject, int *nentries)
+static X509_NAME* subject_to_x509_name(const char *subject, int *nentries)
 {
     X509_NAME* in_subject;
     const char *p;
@@ -352,7 +352,7 @@ fail:
     return NULL;
 }
 
-int verify_subject(X509* cert, SpiceOpenSSLVerify* verify)
+static int verify_subject(X509* cert, SpiceOpenSSLVerify* verify)
 {
     X509_NAME *cert_subject = NULL;
     int ret;