diff --git a/lasso/id-ff/provider.c b/lasso/id-ff/provider.c
index 275207c6..9ab90982 100644
--- a/lasso/id-ff/provider.c
+++ b/lasso/id-ff/provider.c
@@ -1773,7 +1773,7 @@ lasso_provider_add_key(LassoProvider *provider, LassoKey *key, gboolean after)
 	LassoSignatureContext context;
 	lasso_error_t rc = 0;
 	GList **list = NULL;
-	xmlSecKey *xml_sec_key;
+	xmlSecKey *xml_sec_key = NULL;
 
 	lasso_bad_param(PROVIDER, provider);
 	lasso_bad_param(KEY, key);
diff --git a/lasso/saml-2.0/login.c b/lasso/saml-2.0/login.c
index 40093c98..4d332926 100644
--- a/lasso/saml-2.0/login.c
+++ b/lasso/saml-2.0/login.c
@@ -1395,7 +1395,7 @@ lasso_saml20_login_build_authn_response_msg(LassoLogin *login)
 	LassoProfile *profile;
 	LassoProvider *remote_provider = NULL;
 	LassoSaml2Assertion *assertion = NULL;
-	LassoHttpMethod http_method;
+	LassoHttpMethod http_method = LASSO_HTTP_METHOD_NONE;
 	char *url = NULL;
 	int rc = 0;
 
diff --git a/lasso/xml/tools.c b/lasso/xml/tools.c
index 5ae12919..2e575b86 100644
--- a/lasso/xml/tools.c
+++ b/lasso/xml/tools.c
@@ -483,7 +483,7 @@ lasso_query_sign(char *query, LassoSignatureContext context)
 	const xmlChar *algo_href = NULL;
 	char *hmac_key;
 	size_t hmac_key_length;
-	const EVP_MD *md;
+	const EVP_MD *md = NULL;
 	xmlSecKey *key;
 	xmlSecKeyData *key_data;
 	unsigned int sigret_size = 0;
diff --git a/lasso/xml/xml.c b/lasso/xml/xml.c
index b881422b..0234bb93 100644
--- a/lasso/xml/xml.c
+++ b/lasso/xml/xml.c
@@ -1417,7 +1417,7 @@ lasso_node_impl_init_from_xml(LassoNode *node, xmlNode *xmlnode)
 	SnippetType type;
 	struct XmlSnippet *snippet_any = NULL;
 	struct XmlSnippet *snippet_any_attribute = NULL;
-	GType g_type_collect_namespaces, g_type_any, g_type_any_attribute;
+	GType g_type_collect_namespaces = 0, g_type_any = 0, g_type_any_attribute = 0;
 	struct XmlSnippet *snippet_collect_namespaces = NULL;
 	struct XmlSnippet *snippet_signature = NULL;
 	gboolean keep_xmlnode = FALSE;